- Allow hugetlb PMD sharing only on 64-bit as it doesn't make a whole lotta
sense on 32-bit
- Add fixes for a misconfigured AMD Zen2 client which wasn't even supposed to
run Linux
-----BEGIN PGP SIGNATURE-----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=d3UC
-----END PGP SIGNATURE-----
Merge tag 'x86_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Update Kirill's email address
- Allow hugetlb PMD sharing only on 64-bit as it doesn't make a whole
lotta sense on 32-bit
- Add fixes for a misconfigured AMD Zen2 client which wasn't even
supposed to run Linux
* tag 'x86_urgent_for_v6.16_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Update Kirill Shutemov's email address for TDX
x86/mm: Disable hugetlb page table sharing on 32-bit
x86/CPU/AMD: Disable INVLPGB on Zen2
x86/rdrand: Disable RDSEED on AMD Cyan Skillfish
- Remove the last leftovers of the ill-fated FPSIMD host state
mapping at EL2 stage-1
- Fix unexpected advertisement to the guest of unimplemented S2 base
granule sizes
- Gracefully fail initialising pKVM if the interrupt controller isn't
GICv3
- Also gracefully fail initialising pKVM if the carveout allocation
fails
- Fix the computing of the minimum MMIO range required for the host on
stage-2 fault
- Fix the generation of the GICv3 Maintenance Interrupt in nested mode
x86:
- Reject SEV{-ES} intra-host migration if one or more vCPUs are actively
being created, so as not to create a non-SEV{-ES} vCPU in an SEV{-ES} VM.
- Use a pre-allocated, per-vCPU buffer for handling de-sparsification of
vCPU masks in Hyper-V hypercalls; fixes a "stack frame too large" issue.
- Allow out-of-range/invalid Xen event channel ports when configuring IRQ
routing, to avoid dictating a specific ioctl() ordering to userspace.
- Conditionally reschedule when setting memory attributes to avoid soft
lockups when userspace converts huge swaths of memory to/from private.
- Add back MWAIT as a required feature for the MONITOR/MWAIT selftest.
- Add a missing field in struct sev_data_snp_launch_start that resulted in
the guest-visible workarounds field being filled at the wrong offset.
- Skip non-canonical address when processing Hyper-V PV TLB flushes to avoid
VM-Fail on INVVPID.
- Advertise supported TDX TDVMCALLs to userspace.
- Pass SetupEventNotifyInterrupt arguments to userspace.
- Fix TSC frequency underflow.
-----BEGIN PGP SIGNATURE-----
iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmhurKgUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroNxHggApTP4vw+oOzfN7UoNmgR9XZMI1p2a
R8AzQ1zDyVbEVWq3xTKvXtld+dKeO0yKB/XeI/1JLck1OiHxY57I3X6k5AnsurEr
CBzeAhAjXivF8woMgmlP+30aqpomcPACdQm0gRnWkRDDJfXqSUas/iE/s9Ct1dT4
4w3PtFLsSsU8vX/RttR+CqF1AQ6SeV/NRvA8hzPGMGZoQ2um74j4ZsM/3xh77Kdw
Z2vOnZOIA4dk0074JjO/Yb9l00Ib4hn+MWG5jVJ+6i2HRRYd2knnB29apVS/ARdL
X20j+LvtYj/jrPPdYwqjvxbIXyLbJrLCZyjKhfueN+rnisPNvzR+7YE4ZQ==
=NduO
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Many patches, pretty much all of them small, that accumulated while I
was on vacation.
ARM:
- Remove the last leftovers of the ill-fated FPSIMD host state
mapping at EL2 stage-1
- Fix unexpected advertisement to the guest of unimplemented S2 base
granule sizes
- Gracefully fail initialising pKVM if the interrupt controller isn't
GICv3
- Also gracefully fail initialising pKVM if the carveout allocation
fails
- Fix the computing of the minimum MMIO range required for the host
on stage-2 fault
- Fix the generation of the GICv3 Maintenance Interrupt in nested
mode
x86:
- Reject SEV{-ES} intra-host migration if one or more vCPUs are
actively being created, so as not to create a non-SEV{-ES} vCPU in
an SEV{-ES} VM
- Use a pre-allocated, per-vCPU buffer for handling de-sparsification
of vCPU masks in Hyper-V hypercalls; fixes a "stack frame too
large" issue
- Allow out-of-range/invalid Xen event channel ports when configuring
IRQ routing, to avoid dictating a specific ioctl() ordering to
userspace
- Conditionally reschedule when setting memory attributes to avoid
soft lockups when userspace converts huge swaths of memory to/from
private
- Add back MWAIT as a required feature for the MONITOR/MWAIT selftest
- Add a missing field in struct sev_data_snp_launch_start that
resulted in the guest-visible workarounds field being filled at the
wrong offset
- Skip non-canonical address when processing Hyper-V PV TLB flushes
to avoid VM-Fail on INVVPID
- Advertise supported TDX TDVMCALLs to userspace
- Pass SetupEventNotifyInterrupt arguments to userspace
- Fix TSC frequency underflow"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: avoid underflow when scaling TSC frequency
KVM: arm64: Remove kvm_arch_vcpu_run_map_fp()
KVM: arm64: Fix handling of FEAT_GTG for unimplemented granule sizes
KVM: arm64: Don't free hyp pages with pKVM on GICv2
KVM: arm64: Fix error path in init_hyp_mode()
KVM: arm64: Adjust range correctly during host stage-2 faults
KVM: arm64: nv: Fix MI line level calculation in vgic_v3_nested_update_mi()
KVM: x86/hyper-v: Skip non-canonical addresses during PV TLB flush
KVM: SVM: Add missing member in SNP_LAUNCH_START command structure
Documentation: KVM: Fix unexpected unindent warnings
KVM: selftests: Add back the missing check of MONITOR/MWAIT availability
KVM: Allow CPU to reschedule while setting per-page memory attributes
KVM: x86/xen: Allow 'out of range' event channel ports in IRQ routing table.
KVM: x86/hyper-v: Use preallocated per-vCPU buffer for de-sparsified vCPU masks
KVM: SVM: Initialize vmsa_pa in VMCB to INVALID_PAGE if VMSA page is NULL
KVM: SVM: Reject SEV{-ES} intra host migration if vCPU creation is in-flight
KVM: TDX: Report supported optional TDVMCALLs in TDX capabilities
KVM: TDX: Exit to userspace for SetupEventNotifyInterrupt
In function kvm_guest_time_update(), __scale_tsc() is used to calculate
a TSC *frequency* rather than a TSC value. With low-enough ratios,
a TSC value that is less than 1 would underflow to 0 and to an infinite
while loop in kvm_get_time_scale():
kvm_guest_time_update(struct kvm_vcpu *v)
if (kvm_caps.has_tsc_control)
tgt_tsc_khz = kvm_scale_tsc(tgt_tsc_khz,
v->arch.l1_tsc_scaling_ratio);
__scale_tsc(u64 ratio, u64 tsc)
ratio=122380531, tsc=2299998, N=48
ratio*tsc >> N = 0.999... -> 0
Later in the function:
Call Trace:
<TASK>
kvm_get_time_scale arch/x86/kvm/x86.c:2458 [inline]
kvm_guest_time_update+0x926/0xb00 arch/x86/kvm/x86.c:3268
vcpu_enter_guest.constprop.0+0x1e70/0x3cf0 arch/x86/kvm/x86.c:10678
vcpu_run+0x129/0x8d0 arch/x86/kvm/x86.c:11126
kvm_arch_vcpu_ioctl_run+0x37a/0x13d0 arch/x86/kvm/x86.c:11352
kvm_vcpu_ioctl+0x56b/0xe60 virt/kvm/kvm_main.c:4188
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0x12d/0x190 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x59/0x110 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x78/0xe2
This can really happen only when fuzzing, since the TSC frequency
would have to be nonsensically low.
Fixes: 35181e86df ("KVM: x86: Add a common TSC scaling function")
Reported-by: Yuntao Liu <liuyuntao12@huawei.com>
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Fix bogus KASAN splat on EFI runtime stack
- Select JUMP_LABEL unconditionally to avoid boot failure with pKVM
and the legacy implementation of static keys
- Avoid touching GCS registers when 'arm64.nogcs' has been passed on the
command-line
- Move a 'cpumask_t' off the stack in smp_send_stop()
- Don't advertise SME-related hwcaps to userspace when ID_AA64PFR1_EL1
indicates that SME is not implemented
- Always check the VMA when handling an Overlay fault
- Avoid corrupting TCR2_EL1 during boot
-----BEGIN PGP SIGNATURE-----
iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmhuU2IQHHdpbGxAa2Vy
bmVsLm9yZwAKCRC3rHDchMFjNLJcCAC+c06O04cqiY2z7ByUIe9G0PEhjDIGCDTe
kLOECPJ2bT0XKFkEnWX5qJ+t6etJomIIgAgk5ZVzBpFmkLeAayMFCjJpGAQ34gZR
vR57g/uWGlJJmdV5LsDD+chRLK76wZYNXI54Hzpu+mgN1wEoa1KTgtn7oul9bcdn
Mnuq183wiCnMYTjO26CVm9IHFVOygJVyaMxQty8zdiZwFDDIAngM1O8E0pXAkCPf
U7/nTbVkejnwDhC5eidPI9Bt3SednKyoSJ3/71fBXVP8E2tHhlwy1VpZiPk73VXz
ZwVBzw2q10uZJRFlybprqWdrVFmOhFP/nXhMP8X5/KT7MXWcfBPi
=GVwU
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
- Fix bogus KASAN splat on EFI runtime stack
- Select JUMP_LABEL unconditionally to avoid boot failure with pKVM and
the legacy implementation of static keys
- Avoid touching GCS registers when 'arm64.nogcs' has been passed on
the command-line
- Move a 'cpumask_t' off the stack in smp_send_stop()
- Don't advertise SME-related hwcaps to userspace when ID_AA64PFR1_EL1
indicates that SME is not implemented
- Always check the VMA when handling an Overlay fault
- Avoid corrupting TCR2_EL1 during boot
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/mm: Drop wrong writes into TCR2_EL1
arm64: poe: Handle spurious Overlay faults
arm64: Filter out SME hwcaps when FEAT_SME isn't implemented
arm64: move smp_send_stop() cpu mask off stack
arm64/gcs: Don't try to access GCS registers if arm64.nogcs is enabled
arm64: Unconditionally select CONFIG_JUMP_LABEL
arm64: efi: Fix KASAN false positive for EFI runtime stack
Only select ARCH_WANT_HUGE_PMD_SHARE on 64-bit x86.
Page table sharing requires at least three levels because it involves
shared references to PMD tables; 32-bit x86 has either two-level paging
(without PAE) or three-level paging (with PAE), but even with
three-level paging, having a dedicated PGD entry for hugetlb is only
barely possible (because the PGD only has four entries), and it seems
unlikely anyone's actually using PMD sharing on 32-bit.
Having ARCH_WANT_HUGE_PMD_SHARE enabled on non-PAE 32-bit X86 (which
has 2-level paging) became particularly problematic after commit
59d9094df3 ("mm: hugetlb: independent PMD page table shared count"),
since that changes `struct ptdesc` such that the `pt_mm` (for PGDs) and
the `pt_share_count` (for PMDs) share the same union storage - and with
2-level paging, PMDs are PGDs.
(For comparison, arm64 also gates ARCH_WANT_HUGE_PMD_SHARE on the
configuration of page tables such that it is never enabled with 2-level
paging.)
Closes: https://lore.kernel.org/r/srhpjxlqfna67blvma5frmy3aa@altlinux.org
Fixes: cfe28c5d63 ("x86: mm: Remove x86 version of huge_pmd_share.")
Reported-by: Vitaly Chikunov <vt@altlinux.org>
Suggested-by: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Acked-by: David Hildenbrand <david@redhat.com>
Tested-by: Vitaly Chikunov <vt@altlinux.org>
Cc:stable@vger.kernel.org
Link: https://lore.kernel.org/all/20250702-x86-2level-hugetlb-v2-1-1a98096edf92%40google.com
AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an issue
that causes system oopses and panics when performing TLB flush using
INVLPGB.
However, the problem is that that machine has misconfigured CPUID and
should not report the INVLPGB bit in the first place. So zap the
kernel's representation of the flag so that nothing gets confused.
[ bp: Massage. ]
Fixes: 767ae437a3 ("x86/mm: Add INVLPGB feature and Kconfig entry")
Signed-off-by: Mikhail Paulyshka <me@mixaill.net>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/1ebe845b-322b-4929-9093-b41074e9e939@mixaill.net
AMD Cyan Skillfish (Family 17h, Model 47h, Stepping 0h) has an error that
causes RDSEED to always return 0xffffffff, while RDRAND works correctly.
Mask the RDSEED cap for this CPU so that both /proc/cpuinfo and direct CPUID
read report RDSEED as unavailable.
[ bp: Move to amd.c, massage. ]
Signed-off-by: Mikhail Paulyshka <me@mixaill.net>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/20250524145319.209075-1-me@mixaill.net
Fix an uninitialized variable in the s390 optimized SHA-1 and SHA-2.
Note that my librarification changes also fix this by greatly
simplifying how the s390 optimized SHA code is integrated. However, we
need this separate fix for 6.16 and older versions.
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCaG1KHRQcZWJpZ2dlcnNA
a2VybmVsLm9yZwAKCRDzXCl4vpKOK29/AQDF1Dx8tciPDlsqNIlhEIpea1cP/rQN
RufISchAaEb93QD/R5tj8J1pswIoXph8HOAsm7vycFt/w1S2lqaXlTg3egc=
=c0Pj
-----END PGP SIGNATURE-----
Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library fix from Eric Biggers:
"Fix an uninitialized variable in the s390 optimized SHA-1 and SHA-2.
Note that my librarification changes also fix this by greatly
simplifying how the s390 optimized SHA code is integrated. However, we
need this separate fix for 6.16 and older versions"
* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
crypto: s390/sha - Fix uninitialized variable in SHA-1 and SHA-2
- Reject SEV{-ES} intra-host migration if one or more vCPUs are actively
being created so as not to create a non-SEV{-ES} vCPU in an SEV{-ES} VM.
- Use a pre-allocated, per-vCPU buffer for handling de-sparsified vCPU masks
when emulating Hyper-V hypercalls to fix a "stack frame too large" issue.
- Allow out-of-range/invalid Xen event channel ports when configuring IRQ
routing to avoid dictating a specific ioctl() ordering to userspace.
- Conditionally reschedule when setting memory attributes to avoid soft
lockups when userspace converts huge swaths of memory to/from private.
- Add back MWAIT as a required feature for the MONITOR/MWAIT selftest.
- Add a missing field in struct sev_data_snp_launch_start that resulted in
the guest-visible workarounds field being filled at the wrong offset.
- Skip non-canonical address when processing Hyper-V PV TLB flushes to avoid
VM-Fail on INVVPID.
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEKTobbabEP7vbhhN9OlYIJqCjN/0FAmhdyHAACgkQOlYIJqCj
N/17aw/9FwD8hhN9SL/g7Pj6MhcMlKXWZVkat+kJmVPR01vYsp5VRqiAs8zZEhtq
dX6E1Vxssc9jz8Ga+hCI1Dc8NWQnfaiCeQkdv+AtjHgmVdFvP4HcLHf7D2GUNwC3
YGIjOLxmYEhdw66zLKnirnPo3GUuoOnG7XicfB8RgM0W6c7QQ/MbU5E0WLSSKGmG
z/B8wTM9OpZMyxwyKMK3vKY90sBdKwbdCUhuPoH9MJpsqkPgmltfw3/TssGy47ox
ZKKTPjI43UJmMVsB77u4NoLr0owke8twPG+GM6X0Jgrcw4O1dfpEa8yeTbZSgr0t
+Se0hFD0diW70gfGovpKouLZE+RSR8Mv88anCmDdRlV76RqHUhaTakNez53FfJyT
qAyAjzrbl+fV6nRFYzXLPZMbHUlpcsclVgF14KDAMdpXfagRqUhfQnIJr1eD7bRS
/rU6xNSF/lYpGx4KiSr6OE7hLeZfC8sQtZcIb62CJT+9yAKNX2yZ6x4xQCqGO18R
/+k+CgzMR0ru4KCR4JmkoCn6LGIDB7ZE+dqvsjoxfDKwlombXhz29yClPNWVi7WM
IjXwgPTKjZVhTmvXHlX7sfASbEy3farKfk99aXlb/MPbAUXtVF9Ruw8cfsrayduy
n7dRp6BTB9YedeLNkMZwN4B3RemLf8vUq3W/2cKS8Ei7PXWDxzw=
=BSws
-----END PGP SIGNATURE-----
Merge tag 'kvm-x86-fixes-6.16-rcN' of https://github.com/kvm-x86/linux into HEAD
KVM x86 fixes for 6.16-rcN
- Reject SEV{-ES} intra-host migration if one or more vCPUs are actively
being created so as not to create a non-SEV{-ES} vCPU in an SEV{-ES} VM.
- Use a pre-allocated, per-vCPU buffer for handling de-sparsified vCPU masks
when emulating Hyper-V hypercalls to fix a "stack frame too large" issue.
- Allow out-of-range/invalid Xen event channel ports when configuring IRQ
routing to avoid dictating a specific ioctl() ordering to userspace.
- Conditionally reschedule when setting memory attributes to avoid soft
lockups when userspace converts huge swaths of memory to/from private.
- Add back MWAIT as a required feature for the MONITOR/MWAIT selftest.
- Add a missing field in struct sev_data_snp_launch_start that resulted in
the guest-visible workarounds field being filled at the wrong offset.
- Skip non-canonical address when processing Hyper-V PV TLB flushes to avoid
VM-Fail on INVVPID.
- Advertise supported TDX TDVMCALLs to userspace.
- Remove the last leftovers from the ill-fated FPSIMD host state
mapping at EL2 stage-1
- Fix unexpected advertisement to the guest of unimplemented S2 base
granule sizes
-----BEGIN PGP SIGNATURE-----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=H+oh
-----END PGP SIGNATURE-----
Merge tag 'kvmarm-fixes-6.16-5' of https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.16, take #
- Remove the last leftovers from the ill-fated FPSIMD host state
mapping at EL2 stage-1
- Fix unexpected advertisement to the guest of unimplemented S2 base
granule sizes
- Gracefully fail initialising pKVM if the interrupt controller isn't
GICv3
- Also gracefully fail initialising pKVM if the carveout allocation
fails
- Fix the computing of the minimum MMIO range required for the host on
stage-2 fault
- Fix the generation of the GICv3 Maintenance Interrupt in nested mode
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEn9UcU+C1Yxj9lZw9I9DQutE9ekMFAmhdY4cACgkQI9DQutE9
ekOyqw//U0wxGtFhzro2bZPLCGfthRsnVsZQDODPiXhUCc2+92/X4Ek+UmWX4McH
Pzgik16g3jq6h+PtwtIjkVucj52QdHS5XiVTai12udtsJMkwFSuWbaNDGW96Y2G9
/msF6FCD82fCz5yYGJMbX69Dthim72O8TTTLMOjBRVvCJzy6NmBRQQTOhfgVNhoI
p91kqx3V02NTIG+Gd03Xhg5QVzGTFEJ3BtGBJ8tlO+o0DIzHbP+0vHSdRmKcchz6
u3zOYBAny3p8Qa2B92QrzLvNXq1bOnnB1a52D5ZDBa1vqDeLSRfFne9V6RTxRDeM
IY1uoWVWHLHkSufzJu6hwteEKStA7FOeihnUAx4I0VllGT7Ce+mFcD/XrNdMYZHS
L5kSWSkfqz0sbX3a1gPO0YpQCZ648lHJqu84VGIasL3uunHCJ5zmu75+G52GXASQ
4hZgd0zlCx1ALvn4KhZhtV+YncrXOPfGXY83o+S3jECjeHR56zQ2XBANt8afjW09
SpJO/UqwFubuLUZECV0tO4bKffIphkeJDYbrLCNdlT+RCSJa0sQ3eWLkZy7YpKr7
EyzQbT8HfIX5sRxKNk0nTgTG0RPV6i2sI7BiUMQrR3hPs5H9Y4Ie3qL9m+FEAzQf
XcrZl7b4xWXCFeQ0PJIOUs26hyiFYrNJvZ6ldcMIsk5keLnKWo4=
=no8X
-----END PGP SIGNATURE-----
Merge tag 'kvmarm-fixes-6.16-4' of https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.16, take #4
- Gracefully fail initialising pKVM if the interrupt controller isn't
GICv3
- Also gracefully fail initialising pKVM if the carveout allocation
fails
- Fix the computing of the minimum MMIO range required for the host on
stage-2 fault
- Fix the generation of the GICv3 Maintenance Interrupt in nested mode
TSA are new aspeculative side channel attacks related to the execution
timing of instructions under specific microarchitectural conditions. In
some cases, an attacker may be able to use this timing information to
infer data from other contexts, resulting in information leakage.
Add the usual controls of the mitigation and integrate it into the
existing speculation bugs infrastructure in the kernel.
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmhSsvQACgkQEsHwGGHe
VUrWNw//V+ZabYq3Nnvh4jEe6Altobnpn8bOIWmcBx6I3xuuArb9bLqcbKerDIcC
POVVW6zrdNigDe/U4aqaJXE7qCRX55uTYbhp8OLH0zzqX3Pjl/hUnEXWtMtlXj/G
CIM5mqjqEFp5JRGXetdjjuvjG1IPf+CbjKqj2WXbi//T6F3LiAFxkzdUhd+clBF/
ztWchjwUmqU0WJd6+Smb8ZnvWrLoZuOFldjhFad820B7fqkdJhzjHMmwBHJKUEZu
oABv8B0/4IALrx6LenCspWS4OuTOGG7DKyIgzitByXygXXb4L3ZUKpuqkxBU7hFx
bscwtOP7e5HIYAekx6ZSLZoZpYQXr1iH0aRGrjwapi3ASIpUwI0UA9ck2PdGo0IY
0GvmN0vbybskewBQyG819BM+DCau5pOLWuL7cYmaD2eTNoOHOknMDNlO8VzXqJxa
NnignSuEWFm2vNV1FXEav2YbVjlanV6JleiPDGBe5Xd9dnxZTvg9HuP2NkYio4dZ
mb/kEU/kTcN8nWh0Q96tX45kmj0vCbBgrSQkmUpyAugp38n69D1tp3ii9D/hyQFH
hKGcFC9m+rYVx1NLyAxhTGxaEqF801d5Qawwud8HsnQudTpCdSXD9fcBg9aCbWEa
FymtDpIeUQrFAjDpVEp6Syh3odKvLXsGEzL+DVvqKDuA8r6DxFo=
=2cLl
-----END PGP SIGNATURE-----
Merge tag 'tsa_x86_bugs_for_6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU speculation fixes from Borislav Petkov:
"Add the mitigation logic for Transient Scheduler Attacks (TSA)
TSA are new aspeculative side channel attacks related to the execution
timing of instructions under specific microarchitectural conditions.
In some cases, an attacker may be able to use this timing information
to infer data from other contexts, resulting in information leakage.
Add the usual controls of the mitigation and integrate it into the
existing speculation bugs infrastructure in the kernel"
* tag 'tsa_x86_bugs_for_6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/process: Move the buffer clearing before MONITOR
x86/microcode/AMD: Add TSA microcode SHAs
KVM: SVM: Advertise TSA CPUID bits to guests
x86/bugs: Add a Transient Scheduler Attacks mitigation
x86/bugs: Rename MDS machinery to something more generic
prevents their TSCs from going skewed from the hypervisor's
-----BEGIN PGP SIGNATURE-----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=6yl8
-----END PGP SIGNATURE-----
Merge tag 'x86_urgent_for_v6.16_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Borislav Petkov:
- Make sure AMD SEV guests using secure TSC, include a TSC_FACTOR which
prevents their TSCs from going skewed from the hypervisor's
* tag 'x86_urgent_for_v6.16_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Use TSC_FACTOR for Secure TSC frequency calculation
fails due to new/unknown banks present, which in itself is not fatal
anyway; add default names for new banks
- Make sure MCE polling settings are honored after CMCI storms
- Make sure MCE threshold limit is reset after the thresholding interrupt has
been serviced
- Clean up properly and disable CMCI banks on shutdown so that
a second/kexec-ed kernel can rediscover those banks again
-----BEGIN PGP SIGNATURE-----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=JI7d
-----END PGP SIGNATURE-----
Merge tag 'ras_urgent_for_v6.16_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS fixes from Borislav Petkov:
- Do not remove the MCE sysfs hierarchy if thresholding sysfs nodes
init fails due to new/unknown banks present, which in itself is not
fatal anyway; add default names for new banks
- Make sure MCE polling settings are honored after CMCI storms
- Make sure MCE threshold limit is reset after the thresholding
interrupt has been serviced
- Clean up properly and disable CMCI banks on shutdown so that a
second/kexec-ed kernel can rediscover those banks again
* tag 'ras_urgent_for_v6.16_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Make sure CMCI banks are cleared during shutdown on Intel
x86/mce/amd: Fix threshold limit reset
x86/mce/amd: Add default names for MCA banks and blocks
x86/mce: Ensure user polling settings are honored when restarting timer
x86/mce: Don't remove sysfs if thresholding sysfs init fails
A couple of fixes for firmware drivers have come up, addressing kernel
side bugs in op-tee and ff-a code, as well as compatibility issues
with exynos-acpm and ff-a protocols.
The only devicetree fixes are for the Apple platform, addressing issues
with conformance to the bindings for the wlan, spi and mipi nodes
-----BEGIN PGP SIGNATURE-----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=QeX7
-----END PGP SIGNATURE-----
Merge tag 'soc-fixes-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"A couple of fixes for firmware drivers have come up, addressing kernel
side bugs in op-tee and ff-a code, as well as compatibility issues
with exynos-acpm and ff-a protocols.
The only devicetree fixes are for the Apple platform, addressing
issues with conformance to the bindings for the wlan, spi and mipi
nodes"
* tag 'soc-fixes-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
arm64: dts: apple: Move touchbar mipi {address,size}-cells from dtsi to dts
arm64: dts: apple: Drop {address,size}-cells from SPI NOR
arm64: dts: apple: t8103: Fix PCIe BCM4377 nodename
optee: ffa: fix sleep in atomic context
firmware: exynos-acpm: fix timeouts on xfers handling
arm64: defconfig: update renamed PHY_SNPS_EUSB2
firmware: arm_ffa: Fix the missing entry in struct ffa_indirect_msg_hdr
firmware: arm_ffa: Replace mutex with rwlock to avoid sleep in atomic context
firmware: arm_ffa: Move memory allocation outside the mutex locking
firmware: arm_ffa: Fix memory leak by freeing notifier callback node
* kCFI is restricted to clang-17 or newer, as earlier versions have
known bugs.
* sbi_hsm_hart_start is now staticly allocated, to avoid tripping up the
SBI HSM page mapping on sparse systems.
-----BEGIN PGP SIGNATURE-----
iQJNBAABCAA3FiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmhn9noZHHBhbG1lcmRh
YmJlbHRAZ29vZ2xlLmNvbQAKCRAuExnzX7sYiU0tD/0QC2u5+AWn1ssYTCb6CM3e
5Py55NuuB8N+WthZiUYS4KPSftdWNIPqarRJZDQaL7Vdemep4m2SglqTqiUc+G4V
35LuU70jweKrYsx3DzrhLfuESg7hLHB4CkywMUgHSSLUcYWSVy7KpplTqZgOYH0P
Ah0ThtLGZViTBrXn0kQIIKVKP//7s7F9++X5uUHXoFjv4p6LtpIPjSc59SGzayTu
iPeUiQw5Az1SN1nbMfa7KiDnF0h/Wgps7B4FbX08DR84ivaevpLLmc+DBeUzeYPs
CeSGINBth5Iju6yHibcNzo5oBQNLEmnyu+Sqm8HU1EmhOgLtPu4GuRTfF7kz0w3/
TQtT+CXIm00E/AvSI0z+3AVtPog9dTCzFBz8d9NG2Hc6Qa9mqJqO3a1h5c696VpF
t0iBXUrAaFswdOnUF7k/Wov5sAqFKdOn3jaFZAA/n+lGiPvf42igQrNgSNCijF+2
zqqK7NiX3h/ofTujjcsNJUTMWWkzQmPTTrqWx73uJ1JR+RynDLAv52n31CLvmjNT
7xrC4RSjI1vcfEHKwom2agz8N097LcXHQqlx/C+dd+GdR5fwLUErqvIwQLuDGIvu
MS+1I22Ht0/2crOdOBIl4NRzz138MavE7opllzkYt2FxmjQ+TGxU5/8uj1D6R2hb
wAeonGICYDFjikP7qhvqEA==
=KCl+
-----END PGP SIGNATURE-----
Merge tag 'riscv-for-linus-6.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- kCFI is restricted to clang-17 or newer, as earlier versions have
known bugs
- sbi_hsm_hart_start is now staticly allocated, to avoid tripping up
the SBI HSM page mapping on sparse systems.
* tag 'riscv-for-linus-6.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: cpu_ops_sbi: Use static array for boot_data
riscv: Require clang-17 or newer for kCFI
Fixes and New HW Support
- amd/isp4: Improve swnode graph (new driver exception)
- asus-nb-wmi: Use duo keyboard quirk for Zenbook Duo UX8406CA
- dell-lis3lv02d: Add Latitude 5500 accelerometer address
- dell-wmi-sysman: Fix WMI data block retrieval and class dev unreg
- hp-bioscfg: Fix class device unregistration
- i2c: piix4: Re-enable on non-x86 + move FCH header under platform_data/
- intel/hid: Wildcat Lake support
- mellanox:
- mlxbf-pmc: Fix duplicate event ID
- mlxbf-tmfifo: Fix vring_desc.len assignment
- mlxreg-lc: Fix bit-not-set logic check
- nvsw-sn2201: Fix bus number in error message & spelling errors
- portwell-ec: Move watchdog device under correct platform hierarchy
- think-lmi: Error handling fixes (sysfs, kset, kobject, class dev unreg)
- thinkpad_acpi: Handle HKEY 0x1402 event (2025 Thinkpads)
- wmi: Fix WMI event enablement
The following is an automated shortlog grouped by driver:
asus-nb-wmi:
- add DMI quirk for ASUS Zenbook Duo UX8406CA
dell-lis3lv02d:
- Add Latitude 5500
dell-wmi-sysman:
- Fix class device unregistration
- Fix WMI data block retrieval in sysfs callbacks
hp-bioscfg:
- Fix class device unregistration
i2c:
- Re-enable piix4 driver on non-x86
intel/hid:
- Add Wildcat Lake support
mellanox:
- Fix spelling and comment clarity in Mellanox drivers
mlxbf-pmc:
- Fix duplicate event ID for CACHE_DATA1
mlxbf-tmfifo:
- fix vring_desc.len assignment
mlxreg-lc:
- Fix logic error in power state check
Move FCH header to a location accessible by all archs:
- Move FCH header to a location accessible by all archs
nvsw-sn2201:
- Fix bus number in adapter error message
portwell-ec:
- Move watchdog device under correct platform hierarchy
think-lmi:
- Create ksets consecutively
- Fix class device unregistration
- Fix kobject cleanup
- Fix sysfs group cleanup
thinkpad_acpi:
- handle HKEY 0x1402 event
Update swnode graph for amd isp4:
- Update swnode graph for amd isp4
wmi:
- Fix WMI event enablement
- Update documentation of WCxx/WExx ACPI methods
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCaGfkwwAKCRBZrE9hU+XO
MVK1AQCK3C21auqcEbiZrx67hr5ir6VwTAZ9S6IR8R2FKqw8YwEAinUOcHSbmP6a
eXV0v5xVRPxZV7JBO5aN7FESqVHpBQ4=
=uxUH
-----END PGP SIGNATURE-----
Merge tag 'platform-drivers-x86-v6.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform drivers fixes from Ilpo Järvinen:
"Mostly a few lines fixed here and there except amd/isp4 which improves
swnodes relationships but that is a new driver not in any stable
kernels yet. The think-lmi driver changes also look relatively large
but there are just many fixes to it.
The i2c/piix4 change is a effectively a revert of the commit
7e173eb82a ("i2c: piix4: Make CONFIG_I2C_PIIX4 dependent on
CONFIG_X86") but that required moving the header out from arch/x86
under include/linux/platform_data/
Summary:
- amd/isp4: Improve swnode graph (new driver exception)
- asus-nb-wmi: Use duo keyboard quirk for Zenbook Duo UX8406CA
- dell-lis3lv02d: Add Latitude 5500 accelerometer address
- dell-wmi-sysman: Fix WMI data block retrieval and class dev unreg
- hp-bioscfg: Fix class device unregistration
- i2c: piix4: Re-enable on non-x86 + move FCH header under platform_data/
- intel/hid: Wildcat Lake support
- mellanox:
- mlxbf-pmc: Fix duplicate event ID
- mlxbf-tmfifo: Fix vring_desc.len assignment
- mlxreg-lc: Fix bit-not-set logic check
- nvsw-sn2201: Fix bus number in error message & spelling errors
- portwell-ec: Move watchdog device under correct platform hierarchy
- think-lmi: Error handling fixes (sysfs, kset, kobject, class dev unreg)
- thinkpad_acpi: Handle HKEY 0x1402 event (2025 Thinkpads)
- wmi: Fix WMI event enablement"
* tag 'platform-drivers-x86-v6.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (22 commits)
platform/x86: think-lmi: Fix sysfs group cleanup
platform/x86: think-lmi: Fix kobject cleanup
platform/x86: think-lmi: Create ksets consecutively
platform/mellanox: mlxreg-lc: Fix logic error in power state check
i2c: Re-enable piix4 driver on non-x86
Move FCH header to a location accessible by all archs
platform/x86/intel/hid: Add Wildcat Lake support
platform/x86: dell-wmi-sysman: Fix class device unregistration
platform/x86: think-lmi: Fix class device unregistration
platform/x86: hp-bioscfg: Fix class device unregistration
platform/x86: Update swnode graph for amd isp4
platform/x86: dell-wmi-sysman: Fix WMI data block retrieval in sysfs callbacks
platform/x86: wmi: Update documentation of WCxx/WExx ACPI methods
platform/x86: wmi: Fix WMI event enablement
platform/mellanox: nvsw-sn2201: Fix bus number in adapter error message
platform/mellanox: Fix spelling and comment clarity in Mellanox drivers
platform/mellanox: mlxbf-pmc: Fix duplicate event ID for CACHE_DATA1
platform/x86: thinkpad_acpi: handle HKEY 0x1402 event
platform/x86: asus-nb-wmi: add DMI quirk for ASUS Zenbook Duo UX8406CA
platform/x86: dell-lis3lv02d: Add Latitude 5500
...
Register X0 contains PIE_E1_ASM and should not be written into REG_TCR2_EL1
which could have an adverse impact otherwise. This has remained undetected
till now probably because current value for PIE_E1_ASM (0xcc880e0ac0800000)
clears TCR2_EL1 which again gets set subsequently with 'tcr2' after testing
for FEAT_TCR2.
Drop this unwarranted 'msr' which is a stray change from an earlier commit.
This line got re-introduced when rebasing on top of the commit 926b66e2eb
("arm64: setup: name 'tcr2' register").
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Fixes: 7052e808c4 ("arm64/sysreg: Get rid of the TCR2_EL1x SysregFields")
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250704063812.298914-1-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
We do not currently issue an ISB after updating POR_EL0 when
context-switching it, for instance. The rationale is that if the old
value of POR_EL0 is more restrictive and causes a fault during
uaccess, the access will be retried [1]. In other words, we are
trading an ISB on every context-switching for the (unlikely)
possibility of a spurious fault. We may also miss faults if the new
value of POR_EL0 is more restrictive, but that's considered
acceptable.
However, as things stand, a spurious Overlay fault results in
uaccess failing right away since it causes fault_from_pkey() to
return true. If an Overlay fault is reported, we therefore need to
double check POR_EL0 against vma_pkey(vma) - this is what
arch_vma_access_permitted() already does.
As it turns out, we already perform that explicit check if no
Overlay fault is reported, and we need to keep that check (see
comment added in fault_from_pkey()). Net result: the Overlay ISS2
bit isn't of much help to decide whether a pkey fault occurred.
Remove the check for the Overlay bit from fault_from_pkey() and
add a comment to try and explain the situation. While at it, also
add a comment to permission_overlay_switch() in case anyone gets
surprised by the lack of ISB.
[1] https://lore.kernel.org/linux-arm-kernel/ZtYNGBrcE-j35fpw@arm.com/
Fixes: 160a8e13de ("arm64: context switch POR_EL0 register")
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Link: https://lore.kernel.org/r/20250619160042.2499290-2-kevin.brodsky@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
We have a number of hwcaps for various SME subfeatures enumerated via
ID_AA64SMFR0_EL1. Currently we advertise these without cross checking
against the main SME feature, advertised in ID_AA64PFR1_EL1.SME which
means that if the two are out of sync userspace can see a confusing
situation where SME subfeatures are advertised without the base SME
hwcap. This can be readily triggered by using the arm64.nosme override
which only masks out ID_AA64PFR1_EL1.SME, and there have also been
reports of VMMs which do the same thing.
Fix this as we did previously for SVE in 064737920b ("arm64: Filter
out SVE hwcaps when FEAT_SVE isn't implemented") by filtering out the
SME subfeature hwcaps when FEAT_SME is not present.
Fixes: 5e64b862c4 ("arm64/sme: Basic enumeration support")
Reported-by: Yury Khrustalev <yury.khrustalev@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250620-arm64-sme-filter-hwcaps-v1-1-02b9d3c2d8ef@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
For really large values of CONFIG_NR_CPUS, a CPU mask value should
not be put on the stack:
arch/arm64/kernel/smp.c:1188:1: error: the frame size of 8544 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]
This could be achieved using alloc_cpumask_var(), which makes it
depend on CONFIG_CPUMASK_OFFSTACK, but as this function is already
serialized and can only run on one CPU, making the variable 'static'
is easier.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20250620111045.3364827-1-arnd@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
During EL2 setup if GCS is advertised in the ID registers we will reset the
GCS control registers GCSCR_EL1 and GCSCRE0_EL1 to known values in order to
ensure it is disabled. This is done without taking into account overrides
supplied on the command line, meaning that if the user has configured
arm64.nogcs we will still access these GCS specific registers. If this was
done because EL3 does not enable GCS this results in traps to EL3 and a
failed boot which is not what users would expect from having set that
parameter.
Move the writes to these registers to finalise_el2_state where we can pay
attention to the command line overrides. For simplicity we leave the
updates to the traps in HCRX_EL2 and the FGT registers in place since these
should only be relevant for KVM guests and KVM will manage them itself for
guests. This follows the existing practice for other similar traps for
overridable features such as those for TPIDR2_EL0 and SMPRI_EL1.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250619-arm64-fix-nogcs-v1-1-febf2973672e@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Aneesh reports that his kernel fails to boot in nVHE mode with
KVM's protected mode enabled. Further investigation by Mostafa
reveals that this fails because CONFIG_JUMP_LABEL=n and that
we have static keys shared between EL1 and EL2.
While this can be worked around, it is obvious that we have long
relied on having CONFIG_JUMP_LABEL enabled at all times, as all
supported compilers now have 'asm goto' (which is the basic block
for jump labels).
Let's simplify our lives once and for all by mandating jump labels.
It's not like anyone else is testing anything without them, and
we already rely on them for other things (kfence, xfs, preempt).
Link: https://lore.kernel.org/r/yq5ah60pkq03.fsf@kernel.org
Reported-by: Aneesh Kumar K.V <aneesh.kumar@kernel.org>
Reported-by: Mostafa Saleh <smostafa@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20250613141936.2219895-1-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
KASAN reports invalid accesses during arch_stack_walk() for EFI runtime
services due to vmalloc tagging[1]. The EFI runtime stack must be allocated
with KASAN tags reset to avoid false positives.
This patch uses arch_alloc_vmap_stack() instead of __vmalloc_node() for
EFI stack allocation, which internally calls kasan_reset_tag()
The changes ensure EFI runtime stacks are properly sanitized for KASAN
while maintaining functional consistency.
Link: https://lore.kernel.org/all/aFVVEgD0236LdrL6@gmail.com/ [1]
Suggested-by: Andrey Konovalov <andreyknvl@gmail.com>
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20250704-arm_kasan-v2-1-32ebb4fd7607@debian.org
Signed-off-by: Will Deacon <will@kernel.org>
Commit 88c02b3f79 ("s390/sha3: Support sha3 performance enhancements")
added the field s390_sha_ctx::first_message_part and made it be used by
s390_sha_update() (now s390_sha_update_blocks()). At the time,
s390_sha_update() was used by all the s390 SHA-1, SHA-2, and SHA-3
algorithms. However, only the initialization functions for SHA-3 were
updated, leaving SHA-1 and SHA-2 using first_message_part uninitialized.
This could cause e.g. the function code CPACF_KIMD_SHA_512 |
CPACF_KIMD_NIP to be used instead of just CPACF_KIMD_SHA_512. This
apparently was harmless, as the SHA-1 and SHA-2 function codes ignore
CPACF_KIMD_NIP; it is recognized only by the SHA-3 function codes
(https://lore.kernel.org/r/73477fe9-a1dc-4e38-98a6-eba9921e8afa@linux.ibm.com/).
Therefore, this bug was found only when first_message_part was later
converted to a boolean and UBSAN detected its uninitialized use.
Regardless, let's fix this by just initializing to zero.
Note: in 6.16, we need to patch SHA-1, SHA-384, and SHA-512. In 6.15
and earlier, we'll also need to patch SHA-224 and SHA-256, as they
hadn't yet been librarified (which incidentally fixed this bug).
Fixes: 88c02b3f79 ("s390/sha3: Support sha3 performance enhancements")
Cc: stable@vger.kernel.org
Reported-by: Ingo Franzki <ifranzki@linux.ibm.com>
Closes: https://lore.kernel.org/r/12740696-595c-4604-873e-aefe8b405fbf@linux.ibm.com
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20250703172316.7914-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
One devicetree fix for a dtbs_warning that's been present for a while:
- Rename the PCIe BCM4377 node to conform to the devicetree binding
schema
Two devicetree fixes for W=1 warnings that have been introduced recently:
- Drop {address,size}-cells from SPI NOR which doesn't have any child
nodes such that these don't make sense
- Move touchbar mipi {address,size}-cells from the dtsi file where the
node is disabled and has no children to the dts file where it's
enabled and its children are declared
Signed-off-by: Sven Peter <sven@kernel.org>
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQS3vz815OHsEaWy0u9EEX0kKnUe6QUCaFbl7AAKCRBEEX0kKnUe
6XsbAQDadDedhUPUJmAzlXvNI+TYA87lijy93dnJAyYCKgWaMwEA4rZRtrCGYhR3
oQOmoE+YVIrgOdpN4gzNlUjIF7mEqAw=
=8+H3
-----END PGP SIGNATURE-----
Merge tag 'apple-soc-fixes-6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/sven/linux into arm/fixes
Apple SoC fixes for 6.16
One devicetree fix for a dtbs_warning that's been present for a while:
- Rename the PCIe BCM4377 node to conform to the devicetree binding
schema
Two devicetree fixes for W=1 warnings that have been introduced recently:
- Drop {address,size}-cells from SPI NOR which doesn't have any child
nodes such that these don't make sense
- Move touchbar mipi {address,size}-cells from the dtsi file where the
node is disabled and has no children to the dts file where it's
enabled and its children are declared
Signed-off-by: Sven Peter <sven@kernel.org>
* tag 'apple-soc-fixes-6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/sven/linux:
arm64: dts: apple: Move touchbar mipi {address,size}-cells from dtsi to dts
arm64: dts: apple: Drop {address,size}-cells from SPI NOR
arm64: dts: apple: t8103: Fix PCIe BCM4377 nodename
1. Correct CONFIG option in arm64 defconfig enabling the Qualcomm SoC
SNPS EUSB2 phy driver, because Kconfig entry was renamed when
changing the driver to a common one, shared with Samsung SoC, thus
defconfig lost that driver effectively.
2. Exynos ACPM: Fix timeouts happening with multiple requests.
-----BEGIN PGP SIGNATURE-----
iQJEBAABCgAuFiEE3dJiKD0RGyM7briowTdm5oaLg9cFAmhP5xEQHGtyemtAa2Vy
bmVsLm9yZwAKCRDBN2bmhouD16RND/sFdmFy5ct7PLt/1eq7/SZYel5Elr+lnodM
3Ugez0wAhn7KPBH56vyTZLgoQCjVY5BSov0nUk3CRj/PIZRWuQK7KFIHAPm6s6HK
e7e8vaOpgOJhhSGAySCMrPGcnqNz7F8S12NGKmkuE/Lsm6toahG6DNzeDSqsqZbN
HnHxnNti0UCgMFH3ag2WdepXJ4Tx+p6QmxLnG9yUjTwkefxMfwrMwcBJ6djM2411
twQjblKqP/03FxUnpLSOtYX6d8/nlfXFk+QXQdd9EZrA7ZtT/VPmVt7MbagYWjRS
7gVRqTK10fEpivKNVHnSYux85GZf+3QPwlc41UdQ5eRfdwDGOWAITbY46mNM4Ied
4rsHgPNvcbF1RjEyT4DqTVQX8fqJBt5ABjwYFAGim41rdDeXSu1YMlyzlE90WAmz
4I1a1TT8SaaA5buiVeqnU4yIPWjZn1RZXgkNPwsOQ/Gluk2xLZVHE/BlK+2N1OwK
G46rsw+HX3QzQ+YEGbyCn3SweZSwQXAG7bg2k3D23El9+USvdt6rXXS7Yi/ogGkH
4Bxipvt2okG8csTH+t3DsO9BK+d6E8lFHScLBh8IB0pbWg80KjM+Uyzl5NL4VOFU
q8W2Fn4H5I2tdKh/j91ZrmK/SnCJMCJRLxwZG2yzbIdLCGiYpmatKA3+JXLSXH+p
A5LsD8ymiQ==
=5+or
-----END PGP SIGNATURE-----
Merge tag 'samsung-fixes-6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into arm/fixes
Samsung SoC fixes for v6.16
1. Correct CONFIG option in arm64 defconfig enabling the Qualcomm SoC
SNPS EUSB2 phy driver, because Kconfig entry was renamed when
changing the driver to a common one, shared with Samsung SoC, thus
defconfig lost that driver effectively.
2. Exynos ACPM: Fix timeouts happening with multiple requests.
* tag 'samsung-fixes-6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
firmware: exynos-acpm: fix timeouts on xfers handling
arm64: defconfig: update renamed PHY_SNPS_EUSB2
Historically KVM hyp code saved the host's FPSIMD state into the hosts's
fpsimd_state memory, and so it was necessary to map this into the hyp
Stage-1 mappings before running a vCPU.
This is no longer necessary as of commits:
* fbc7e61195 ("KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state")
* 8eca7f6d51 ("KVM: arm64: Remove host FPSIMD saving for non-protected KVM")
Since those commits, we eagerly save the host's FPSIMD state before
calling into hyp to run a vCPU, and hyp code never reads nor writes the
host's fpsimd_state memory. There's no longer any need to map the host's
fpsimd_state memory into the hyp Stage-1, and kvm_arch_vcpu_run_map_fp()
is unnecessary but benign.
Remove kvm_arch_vcpu_run_map_fp(). Currently there is no code to perform
a corresponding unmap, and we never mapped the host's SVE or SME state
into the hyp Stage-1, so no other code needs to be removed.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Will Deacon <will@kernel.org>
Cc: kvmarm@lists.linux.dev
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20250619134817.4075340-1-mark.rutland@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Booting an EL2 guest on a system only supporting a subset of the
possible page sizes leads to interesting situations.
For example, on a system that only supports 4kB and 64kB, and is
booted with a 4kB kernel, we end-up advertising 16kB support at
stage-2, which is pretty weird.
That's because we consider that any S2 bigger than our base granule
is fair game, irrespective of what the HW actually supports. While this
is not impossible to support (KVM would happily handle it), it is likely
to be confusing for the guest.
Add new checks that will verify that this granule size is actually
supported before publishing it to the guest.
Fixes: e7ef6ed458 ("KVM: arm64: Enforce NV limits on a per-idregs basis")
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
- Fix PCI error recovery and bring it in line with AER/EEH
-----BEGIN PGP SIGNATURE-----
iI0EABYKADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCaGU3EBccYWdvcmRlZXZA
bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8BoVAP4+t6zSnkV8nSDTX6yISaI9o8Dx
v4feTwMOkizuFbQbxQEA/QiQsN4bOymNDWwNgkzLDEBjirVLsYVzlvS2ttFfjAE=
=oStU
-----END PGP SIGNATURE-----
Merge tag 's390-6.16-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Alexander Gordeev:
- Fix PCI error recovery and bring it in line with AER/EEH
* tag 's390-6.16-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/pci: Allow automatic recovery with minimal driver support
s390/pci: Do not try re-enabling load/store if device is disabled
s390/pci: Fix stale function handles in error handling
When using Secure TSC, the GUEST_TSC_FREQ MSR reports a frequency based on
the nominal P0 frequency, which deviates slightly (typically ~0.2%) from
the actual mean TSC frequency due to clocking parameters.
Over extended VM uptime, this discrepancy accumulates, causing clock skew
between the hypervisor and a SEV-SNP VM, leading to early timer interrupts as
perceived by the guest.
The guest kernel relies on the reported nominal frequency for TSC-based
timekeeping, while the actual frequency set during SNP_LAUNCH_START may
differ. This mismatch results in inaccurate time calculations, causing the
guest to perceive hrtimers as firing earlier than expected.
Utilize the TSC_FACTOR from the SEV firmware's secrets page (see "Secrets
Page Format" in the SNP Firmware ABI Specification) to calculate the mean
TSC frequency, ensuring accurate timekeeping and mitigating clock skew in
SEV-SNP VMs.
Use early_ioremap_encrypted() to map the secrets page as
ioremap_encrypted() uses kmalloc() which is not available during early TSC
initialization and causes a panic.
[ bp: Drop the silly dummy var:
https://lore.kernel.org/r/20250630192726.GBaGLlHl84xIopx4Pt@fat_crate.local ]
Fixes: 73bbf3b0fb ("x86/tsc: Init the TSC for Secure TSC guests")
Signed-off-by: Nikunj A Dadhania <nikunj@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/20250630081858.485187-1-nikunj@amd.com
A new header fch.h was created to store registers used by different AMD
drivers. This header was included by i2c-piix4 in
commit 624b0d5696 ("i2c: piix4, x86/platform: Move the SB800 PIIX4 FCH
definitions to <asm/amd/fch.h>"). To prevent compile failures on non-x86
archs i2c-piix4 was set to only compile on x86 by commit 7e173eb82a
("i2c: piix4: Make CONFIG_I2C_PIIX4 dependent on CONFIG_X86").
This was not a good decision because loongarch and mips both actually
support i2c-piix4 and set it enabled in the defconfig.
Move the header to a location accessible by all architectures.
Fixes: 624b0d5696 ("i2c: piix4, x86/platform: Move the SB800 PIIX4 FCH definitions to <asm/amd/fch.h>")
Suggested-by: Hans de Goede <hansg@kernel.org>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20250610205817.3912944-1-superm1@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
After the combination of commit c217157bcd ("riscv: Implement
HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS"), which starts using
'-fpatchable-function-entry=M,N', and commit d0262e907e ("riscv:
ftrace: support PREEMPT"), which allows CONFIG_DYNAMIC_FTRACE to be
enabled by allmodconfig, allmodconfig builds with clang-16 begin
crashing in the generic LLVM kCFI pass (see [1] for the stack trace).
clang-17 avoids this crash by moving to target-specific lowering of the
kCFI operand bundles [2]. Require clang-17 to select CONFIG_CFI_CLANG to
avoid this crash.
Fixes: c217157bcd ("riscv: Implement HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS")
Link: https://godbolt.org/z/xG39Pn16o [1]
Link: 62fa708ceb [2]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20250612-riscv-require-clang-17-for-kcfi-v1-1-216f7cd7d87f@kernel.org
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
accidentally cleared, leading to misconfigurations
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmhg/UQACgkQEsHwGGHe
VUrmXBAAtOrpEtR4geeBeZtCEaUxE4DE8Zvj36dr+sAScHTXNTzYK94mAy/AHU22
V3rF12/kuyyZSrwROXLBD6PgkHEn8u0WLztSeqP/SisnoLjMTV9H9TuGYBUoz1NS
clkoElQ6DJP5BVzmYpZlJrcofqNjkS/mAxfMRoIAq+LzKkb3iL/Lge+Ox/IDUg8z
L9wRlKh/IaJ5EETWlqh0gkFeS/M9DXYmfkasDQeVkUxnKFeXBdyUGc2jFzBGX5RA
rsdnz+C3x3ow2U9N+ZMVr+n06yTZvh+fAiU8emeBQm0q5fZBBHWDbnZZtWf+KG6s
43tlWyVqic5yzyQbUpRC2sttOkIAtOCMx36XexbGm1eKRNNc6fTz9IlgO/97HkuE
lYBNq0zd/p5Kb53lXb3uwBVy4sjIEZUyD/K5DO4YfTgamcwXl8BP5xnKtNPqImI5
aaF3xKKLOUDOTL1CcK5YG0joaU1k+I0F0KO7HYqkDi8Uf5naWZSUNil8nPQn8RX7
3f3LJx0e3j2o0f60AHI4mjUAUJHsxExmpaTl079k03wt8YVE3ucNaUN6se6nidVz
H5q0JU4q3C3DCu0I3Ub4wa5QXGA+TOHKuqhJCapKAVAAQDlbV2z8GxA/3B2YbRM+
eZ6/RVyk++VrRXIyfmfwLPu0CLVoSNhaUhu/hFrYbjA3NX+85qw=
=fjgT
-----END PGP SIGNATURE-----
Merge tag 'x86_urgent_for_v6.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Make sure DR6 and DR7 are initialized to their architectural values
and not accidentally cleared, leading to misconfigurations
* tag 'x86_urgent_for_v6.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/traps: Initialize DR7 by writing its architectural reset value
x86/traps: Initialize DR6 by writing its architectural reset value
-----BEGIN PGP SIGNATURE-----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=jnb5
-----END PGP SIGNATURE-----
Merge tag 'loongarch-fixes-6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
- replace __ASSEMBLY__ with __ASSEMBLER__ in headers like others
- fix build warnings about export.h
- reserve the EFI memory map region for kdump
- handle __init vs inline mismatches
- fix some KVM bugs
* tag 'loongarch-fixes-6.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: KVM: Disable updating of "num_cpu" and "feature"
LoongArch: KVM: Check validity of "num_cpu" from user space
LoongArch: KVM: Check interrupt route from physical CPU
LoongArch: KVM: Fix interrupt route update with EIOINTC
LoongArch: KVM: Add address alignment check for IOCSR emulation
LoongArch: KVM: Avoid overflow with array index
LoongArch: Handle KCOV __init vs inline mismatches
LoongArch: Reserve the EFI memory map region
LoongArch: Fix build warnings about export.h
LoongArch: Replace __ASSEMBLY__ with __ASSEMBLER__ in headers
According to Documentation/PCI/pci-error-recovery.rst only the
error_detected() callback in the err_handler struct is mandatory for
a driver to support error recovery. So far s390's error recovery chose
a stricter approach also requiring slot_reset() and resume().
Relax this requirement and only require error_detected(). If a callback
is not implemented EEH and AER treat this as PCI_ERS_RESULT_NONE. This
return value is otherwise used by drivers abstaining from their vote
on how to proceed with recovery and currently also not supported by
s390's recovery code.
So to support missing callbacks in-line with other implementors of the
recovery flow, also handle PCI_ERS_RESULT_NONE. Since s390 only does per
PCI function recovery and does not do voting, treat PCI_ERS_RESULT_NONE
optimistically and proceed through recovery unless other failures
prevent this.
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Reviewed-by: Julian Ruess <julianr@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
If a device is disabled unblocking load/store on its own is not useful
as a full re-enable of the function is necessary anyway. Note that SCLP
Write Event Data Action Qualifier 0 (Reset) leaves the device disabled
and triggers this case unless the driver already requests a reset.
Cc: stable@vger.kernel.org
Fixes: 4cdf2f4e24 ("s390/pci: implement minimal PCI error recovery")
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The error event information for PCI error events contains a function
handle for the respective function. This handle is generally captured at
the time the error event was recorded. Due to delays in processing or
cascading issues, it may happen that during firmware recovery multiple
events are generated. When processing these events in order Linux may
already have recovered an affected function making the event information
stale. Fix this by doing an unconditional CLP List PCI function
retrieving the current function handle with the zdev->state_lock held
and ignoring the event if its function handle is stale.
Cc: stable@vger.kernel.org
Fixes: 4cdf2f4e24 ("s390/pci: implement minimal PCI error recovery")
Reviewed-by: Julian Ruess <julianr@linux.ibm.com>
Reviewed-by: Gerd Bayer <gbayer@linux.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
CMCI banks are not cleared during shutdown on Intel CPUs. As a side effect,
when a kexec is performed, CPUs coming back online are unable to
rediscover/claim these occupied banks which breaks MCE reporting.
Clear the CPU ownership during shutdown via cmci_clear() so the banks can
be reclaimed and MCE reporting will become functional once more.
[ bp: Massage commit message. ]
Reported-by: Aijay Adams <aijay@meta.com>
Signed-off-by: JP Kobryn <inwardvessel@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/20250627174935.95194-1-inwardvessel@gmail.com
* .rodata is no longer linkd into PT_DYNAMIC, it was not supposed to be
there in the first place and resultst in invalid (but unused) entries.
This manifests as at least warnings in llvm-readelf.
* A fix for runtime constants with all-0 upper 32-bits. This should
only manifest on MMU=n kernels.
* A fix for context save/restore on systems using the T-Head vector
extensions.
* A fix for a conflicting "+r"/"r" register constraint in the VDSO
getrandom syscall wrapper, which is undefined behavior in clang.
* A fix for a missing register clobber in the RVV raid6 implementation.
This manifests as a NULL pointer reference on some compilers, but
could trigger in other ways.
* Misaligned accesses from userspace at faulting addresses are now
handled correctly.
* A fix for an incorrect optimization that allowed access_ok() to mark
invalid addresses as accessible, which can result in userspace
triggering BUG()s.
* A few fixes for build warnings, and an update to Drew's email address.
-----BEGIN PGP SIGNATURE-----
iQJNBAABCAA3FiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmhe80kZHHBhbG1lcmRh
YmJlbHRAZ29vZ2xlLmNvbQAKCRAuExnzX7sYicV6EACT/5384tdpYSQ6WQ4K2mT2
XxPbrYTJ4jrhZMugnfe1LHBokeBGoGPRK11Dr/PyNJ71oeeDF7opv0kxAfqsiOO3
QrwUE/4zhGgEzs7Z6D8UgYiqVDfb4aMU+oZ0qIfy+r+cB4F9M65TIejdVj99V6Hu
V9cjJ4ABM9KfaZhD5BvoqflblYtwuSg/VYsUmZH6aolDyadzTy4rWcPk1jdFJDQt
tIEsXjc92KNAKGSFe8DDZjjhM216Th/nUsZcxI2DLRQjjHPNEthkAgLNltQGocU9
gJ8U3IqfazgnqcZAlrr7BXlWYlBFH/wGXVsxuBL5LPov19RcTkjl2PWH7T08yyuv
lCGXrfkz3hSu+Sa9A40w4LptrKNWUEFJztaPkQ68gn1ZQP7KB/rsWp+82dCqhT35
RNxmSznLyTsHFRXR2n9fZrWX/F/LwxY7vaH7cTZUDkMHI8F7WP/3tlihxPCQaUHD
dIb+osch8puxG3YjO7H99WrpJamNNw3+L1l2lXtXTRmXdxE+x7fyatmHX98mY8IC
7NXGOdNNIEvv4i9vzSphYQHBOT3tBVfz40z878qfSL3xYHG3ZLMIsWuynaWDMI73
QprwAPmdFxdmJrHyIY6gIiyrscNHz5WLMjkG4K+jXlsBBmDxJMAY5zzNdFoeUVDz
tjnDY4DYc4fCnteKSA/hpw==
=42TO
-----END PGP SIGNATURE-----
Merge tag 'riscv-for-linus-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V Fixes for 5.16-rc4
- .rodata is no longer linkd into PT_DYNAMIC.
It was not supposed to be there in the first place and resulted in
invalid (but unused) entries. This manifests as at least warnings in
llvm-readelf
- A fix for runtime constants with all-0 upper 32-bits. This should
only manifest on MMU=n kernels
- A fix for context save/restore on systems using the T-Head vector
extensions
- A fix for a conflicting "+r"/"r" register constraint in the VDSO
getrandom syscall wrapper, which is undefined behavior in clang
- A fix for a missing register clobber in the RVV raid6 implementation.
This manifests as a NULL pointer reference on some compilers, but
could trigger in other ways
- Misaligned accesses from userspace at faulting addresses are now
handled correctly
- A fix for an incorrect optimization that allowed access_ok() to mark
invalid addresses as accessible, which can result in userspace
triggering BUG()s
- A few fixes for build warnings, and an update to Drew's email address
* tag 'riscv-for-linus-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: export boot_cpu_hartid
Revert "riscv: Define TASK_SIZE_MAX for __access_ok()"
riscv: Fix sparse warning in vendor_extensions/sifive.c
Revert "riscv: misaligned: fix sleeping function called during misaligned access handling"
MAINTAINERS: Update Drew Fustini's email address
RISC-V: uaccess: Wrap the get_user_8 uaccess macro
raid6: riscv: Fix NULL pointer dereference caused by a missing clobber
RISC-V: vDSO: Correct inline assembly constraints in the getrandom syscall wrapper
riscv: vector: Fix context save/restore with xtheadvector
riscv: fix runtime constant support for nommu kernels
riscv: vdso: Exclude .rodata from the PT_DYNAMIC segment
- Fix incorrectly dropped dereferencing of the stack nth entry
introduced with a previous KASAN false positive fix
- Use a proper memdup_array_user() helper to prevent overflow
in a protected key size calculation
-----BEGIN PGP SIGNATURE-----
iI0EABYKADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCaF1tnRccYWdvcmRlZXZA
bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8LQXAP47ZqfoOoWig2uO3j2JuEOLF7fo
9Pvp1593fgpX1+BlowEAw6zRb1KF4hRcuOI/9rUD2AE6Xjh/xTE6qa7hR8GHHgA=
=Q5GY
-----END PGP SIGNATURE-----
Merge tag 's390-6.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Alexander Gordeev:
- Fix incorrectly dropped dereferencing of the stack nth entry
introduced with a previous KASAN false positive fix
- Use a proper memdup_array_user() helper to prevent overflow in a
protected key size calculation
* tag 's390-6.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/ptrace: Fix pointer dereferencing in regs_get_kernel_stack_nth()
s390/pkey: Prevent overflow in size calculation for memdup_user()
The MCA threshold limit must be reset after servicing the interrupt.
Currently, the restart function doesn't have an explicit check for this. It
makes some assumptions based on the current limit and what's in the registers.
These assumptions don't always hold, so the limit won't be reset in some
cases.
Make the reset condition explicit. Either an interrupt/overflow has occurred
or the bank is being initialized.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/20250624-wip-mca-updates-v4-4-236dd74f645f@amd.com
Ensure that sysfs init doesn't fail for new/unrecognized bank types or if
a bank has additional blocks available.
Most MCA banks have a single thresholding block, so the block takes the same
name as the bank.
Unified Memory Controllers (UMCs) are a special case where there are two
blocks and each has a unique name.
However, the microarchitecture allows for five blocks. Any new MCA bank types
with more than one block will be missing names for the extra blocks. The MCE
sysfs will fail to initialize in this case.
Fixes: 87a6d4091b ("x86/mce/AMD: Update sysfs bank names for SMCA systems")
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/20250624-wip-mca-updates-v4-3-236dd74f645f@amd.com
Users can disable MCA polling by setting the "ignore_ce" parameter or by
setting "check_interval=0". This tells the kernel to *not* start the MCE
timer on a CPU.
If the user did not disable CMCI, then storms can occur. When these
happen, the MCE timer will be started with a fixed interval. After the
storm subsides, the timer's next interval is set to check_interval.
This disregards the user's input through "ignore_ce" and
"check_interval". Furthermore, if "check_interval=0", then the new timer
will run faster than expected.
Create a new helper to check these conditions and use it when a CMCI
storm ends.
[ bp: Massage. ]
Fixes: 7eae17c4ad ("x86/mce: Add per-bank CMCI storm mitigation")
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/20250624-wip-mca-updates-v4-2-236dd74f645f@amd.com
Property "num_cpu" and "feature" are read-only once eiointc is created,
which are set with KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL attr group before
device creation.
Attr group KVM_DEV_LOONGARCH_EXTIOI_GRP_SW_STATUS is to update register
and software state for migration and reset usage, property "num_cpu" and
"feature" can not be update again if it is created already.
Here discard write operation with property "num_cpu" and "feature" in
attr group KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL.
Cc: stable@vger.kernel.org
Fixes: 1ad7efa552 ("LoongArch: KVM: Add EIOINTC user mode read and write functions")
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
The maximum supported cpu number is EIOINTC_ROUTE_MAX_VCPUS about
irqchip EIOINTC, here add validation about cpu number to avoid array
pointer overflow.
Cc: stable@vger.kernel.org
Fixes: 1ad7efa552 ("LoongArch: KVM: Add EIOINTC user mode read and write functions")
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
With EIOINTC interrupt controller, physical CPU ID is set for irq route.
However the function kvm_get_vcpu() is used to get destination vCPU when
delivering irq. With API kvm_get_vcpu(), the logical CPU ID is used.
With API kvm_get_vcpu_by_cpuid(), vCPU ID can be searched from physical
CPU ID.
Cc: stable@vger.kernel.org
Fixes: 3956a52bc0 ("LoongArch: KVM: Add EIOINTC read and write functions")
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
With function eiointc_update_sw_coremap(), there is forced assignment
like val = *(u64 *)pvalue. Parameter pvalue may be pointer to char type
or others, there is problem with forced assignment with u64 type.
Here the detailed value is passed rather address pointer.
Cc: stable@vger.kernel.org
Fixes: 3956a52bc0 ("LoongArch: KVM: Add EIOINTC read and write functions")
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
IOCSR instruction supports 1/2/4/8 bytes access, the address should be
naturally aligned with its access size. Here address alignment check is
added in the EIOINTC kernel emulation.
Cc: stable@vger.kernel.org
Fixes: 3956a52bc0 ("LoongArch: KVM: Add EIOINTC read and write functions")
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
