Commit graph

3,450 commits

Author SHA1 Message Date
Andrew Bresticker
5c7ed4d957 efi: Don't add memblocks for soft-reserved memory
[ Upstream commit 0bcff59ef7 ]

Adding memblocks for soft-reserved regions prevents them from later being
hotplugged in by dax_kmem.

Signed-off-by: Andrew Bresticker <abrestic@rivosinc.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-01 13:34:55 +01:00
Andrew Bresticker
cf3d681360 efi: runtime: Fix potential overflow of soft-reserved region size
[ Upstream commit de1034b38a ]

md_size will have been narrowed if we have >= 4GB worth of pages in a
soft-reserved region.

Signed-off-by: Andrew Bresticker <abrestic@rivosinc.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-01 13:34:55 +01:00
Jan Kiszka
5babeec518 riscv/efistub: Ensure GP-relative addressing is not used
commit afb2a4fb84 upstream.

The cflags for the RISC-V efistub were missing -mno-relax, thus were
under the risk that the compiler could use GP-relative addressing. That
happened for _edata with binutils-2.41 and kernel 6.1, causing the
relocation to fail due to an invalid kernel_size in handle_kernel_image.
It was not yet observed with newer versions, but that may just be luck.

Cc: <stable@vger.kernel.org>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-03-01 13:34:47 +01:00
Ard Biesheuvel
8117961d98 x86/efi: Disregard setup header of loaded image
commit 7e50262229 upstream.

The native EFI entrypoint does not take a struct boot_params from the
loader, but instead, it constructs one from scratch, using the setup
header data placed at the start of the image.

This setup header is placed in a way that permits legacy loaders to
manipulate the contents (i.e., to pass the kernel command line or the
address and size of an initial ramdisk), but EFI boot does not use it in
that way - it only copies the contents that were placed there at build
time, but EFI loaders will not (and should not) manipulate the setup
header to configure the boot. (Commit 63bf28ceb3 "efi: x86: Wipe
setup_data on pure EFI boot" deals with some of the fallout of using
setup_data in a way that breaks EFI boot.)

Given that none of the non-zero values that are copied from the setup
header into the EFI stub's struct boot_params are relevant to the boot
now that the EFI stub no longer enters via the legacy decompressor, the
copy can be omitted altogether.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230912090051.4014114-19-ardb@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-02-23 09:25:25 +01:00
Ard Biesheuvel
fa24408502 x86/efi: Drop EFI stub .bss from .data section
commit 5f51c5d0e9 upstream.

Now that the EFI stub always zero inits its BSS section upon entry,
there is no longer a need to place the BSS symbols carried by the stub
into the .data section.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230912090051.4014114-18-ardb@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-02-23 09:25:25 +01:00
Ard Biesheuvel
0e7ca435c5 x86/efistub: Avoid placing the kernel below LOAD_PHYSICAL_ADDR
[ Upstream commit 2f77465b05 ]

The EFI stub's kernel placement logic randomizes the physical placement
of the kernel by taking all available memory into account, and picking a
region at random, based on a random seed.

When KASLR is disabled, this seed is set to 0x0, and this results in the
lowest available region of memory to be selected for loading the kernel,
even if this is below LOAD_PHYSICAL_ADDR. Some of this memory is
typically reserved for the GFP_DMA region, to accommodate masters that
can only access the first 16 MiB of system memory.

Even if such devices are rare these days, we may still end up with a
warning in the kernel log, as reported by Tom:

 swapper/0: page allocation failure: order:10, mode:0xcc1(GFP_KERNEL|GFP_DMA), nodemask=(null),cpuset=/,mems_allowed=0

Fix this by tweaking the random allocation logic to accept a low bound
on the placement, and set it to LOAD_PHYSICAL_ADDR.

Fixes: a1b87d54f4 ("x86/efistub: Avoid legacy decompressor when doing EFI boot")
Reported-by: Tom Englund <tomenglund26@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218404
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-02-16 19:10:47 +01:00
Ard Biesheuvel
c756fd5d46 x86/efistub: Give up if memory attribute protocol returns an error
[ Upstream commit a7a6a01f88 ]

The recently introduced EFI memory attributes protocol should be used
if it exists to ensure that the memory allocation created for the kernel
permits execution. This is needed for compatibility with tightened
requirements related to Windows logo certification for x86 PCs.

Currently, we simply strip the execute protect (XP) attribute from the
entire range, but this might be rejected under some firmware security
policies, and so in a subsequent patch, this will be changed to only
strip XP from the executable region that runs early, and make it
read-only (RO) as well.

In order to catch any issues early, ensure that the memory attribute
protocol works as intended, and give up if it produces spurious errors.

Note that the DXE services based fallback was always based on best
effort, so don't propagate any errors returned by that API.

Fixes: a1b87d54f4 ("x86/efistub: Avoid legacy decompressor when doing EFI boot")
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-02-16 19:10:46 +01:00
Cristian Marussi
a1703748bb firmware: arm_scmi: Use xa_insert() when saving raw queues
[ Upstream commit b5dc0ffd36 ]

Use xa_insert() when saving per-channel raw queues to better check for
duplicates.

Fixes: 7860701d1e ("firmware: arm_scmi: Add per-channel raw injection support")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240108185050.1628687-2-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-31 16:19:12 -08:00
Cristian Marussi
1c6d42e55d firmware: arm_scmi: Use xa_insert() to store opps
[ Upstream commit e8ef4bbe39 ]

When storing opps by level or index use xa_insert() instead of xa_store()
and add error-checking to spot bad duplicates indexes possibly wrongly
provided by the platform firmware.

Fixes: 31c7c1397a ("firmware: arm_scmi: Add v3.2 perf level indexing mode support")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240108185050.1628687-1-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-31 16:19:12 -08:00
Thomas Zimmermann
e256f6d364 Revert "drivers/firmware: Move sysfb_init() from device_initcall to subsys_initcall_sync"
commit d1b163aa07 upstream.

This reverts commit 60aebc9559.

Commit 60aebc9559 ("drivers/firmware: Move sysfb_init() from
device_initcall to subsys_initcall_sync") messes up initialization order
of the graphics drivers and leads to blank displays on some systems. So
revert the commit.

To make the display drivers fully independent from initialization
order requires to track framebuffer memory by device and independently
from the loaded drivers. The kernel currently lacks the infrastructure
to do so.

Reported-by: Jaak Ristioja <jaak@ristioja.ee>
Closes: https://lore.kernel.org/dri-devel/ZUnNi3q3yB3zZfTl@P70.localdomain/T/#t
Reported-by: Huacai Chen <chenhuacai@loongson.cn>
Closes: https://lore.kernel.org/dri-devel/20231108024613.2898921-1-chenhuacai@loongson.cn/
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10133
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: stable@vger.kernel.org # v6.5+
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240123120937.27736-1-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-31 16:19:07 -08:00
Cristian Marussi
9b5e1b93c8 firmware: arm_scmi: Check mailbox/SMT channel for consistency
commit 437a310b22 upstream.

On reception of a completion interrupt the shared memory area is accessed
to retrieve the message header at first and then, if the message sequence
number identifies a transaction which is still pending, the related
payload is fetched too.

When an SCMI command times out the channel ownership remains with the
platform until eventually a late reply is received and, as a consequence,
any further transmission attempt remains pending, waiting for the channel
to be relinquished by the platform.

Once that late reply is received the channel ownership is given back
to the agent and any pending request is then allowed to proceed and
overwrite the SMT area of the just delivered late reply; then the wait
for the reply to the new request starts.

It has been observed that the spurious IRQ related to the late reply can
be wrongly associated with the freshly enqueued request: when that happens
the SCMI stack in-flight lookup procedure is fooled by the fact that the
message header now present in the SMT area is related to the new pending
transaction, even though the real reply has still to arrive.

This race-condition on the A2P channel can be detected by looking at the
channel status bits: a genuine reply from the platform will have set the
channel free bit before triggering the completion IRQ.

Add a consistency check to validate such condition in the A2P ISR.

Reported-by: Xinglong Yang <xinglong.yang@cixtech.com>
Closes: https://lore.kernel.org/all/PUZPR06MB54981E6FA00D82BFDBB864FBF08DA@PUZPR06MB5498.apcprd06.prod.outlook.com/
Fixes: 5c8a47a5a9 ("firmware: arm_scmi: Make scmi core independent of the transport type")
Cc: stable@vger.kernel.org # 5.15+
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Xinglong Yang <xinglong.yang@cixtech.com>
Link: https://lore.kernel.org/r/20231220172112.763539-1-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-31 16:19:07 -08:00
Christophe JAILLET
7615536a37 firmware: ti_sci: Fix an off-by-one in ti_sci_debugfs_create()
[ Upstream commit 964946b888 ]

The ending NULL is not taken into account by strncat(), so switch to
snprintf() to correctly build 'debug_name'.

Using snprintf() also makes the code more readable.

Fixes: aa276781a6 ("firmware: Add basic support for TI System Control Interface (TI-SCI) protocol")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/7158db0a4d7b19855ddd542ec61b666973aad8dc.1698660720.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-25 15:35:20 -08:00
Wang Yao
6e567410d6 efi/loongarch: Use load address to calculate kernel entry address
[ Upstream commit 271f2a4a95 ]

The efi_relocate_kernel() may load the PIE kernel to anywhere, the
loaded address may not be equal to link address or
EFI_KIMG_PREFERRED_ADDRESS.

Acked-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Wang Yao <wangyao@lemote.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-20 11:51:43 +01:00
Ard Biesheuvel
800f84d8f0 efi/x86: Avoid physical KASLR on older Dell systems
[ Upstream commit 50d7cdf7a9 ]

River reports boot hangs with v6.6 and v6.7, and the bisect points to
commit

  a1b87d54f4 ("x86/efistub: Avoid legacy decompressor when doing EFI boot")

which moves the memory allocation and kernel decompression from the
legacy decompressor (which executes *after* ExitBootServices()) to the
EFI stub, using boot services for allocating the memory. The memory
allocation succeeds but the subsequent call to decompress_kernel() never
returns, resulting in a failed boot and a hanging system.

As it turns out, this issue only occurs when physical address
randomization (KASLR) is enabled, and given that this is a feature we
can live without (virtual KASLR is much more important), let's disable
the physical part of KASLR when booting on AMI UEFI firmware claiming to
implement revision v2.0 of the specification (which was released in
2006), as this is the version these systems advertise.

Fixes: a1b87d54f4 ("x86/efistub: Avoid legacy decompressor when doing EFI boot")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218173
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-20 17:01:43 +01:00
Sudeep Holla
0ca497a90e firmware: arm_scmi: Fix possible frequency truncation when using level indexing mode
[ Upstream commit 77f5032e94 ]

The multiplier is already promoted to unsigned long, however the
frequency calculations done when using level indexing mode doesn't
use the multiplier computed. It instead hardcodes the multiplier
value of 1000 at all the usage sites.

Clean that up by assigning the multiplier value of 1000 when using
the perf level indexing mode and update the frequency calculations to
use the multiplier instead. It should fix the possible frequency
truncation for all the values greater than or equal to 4GHz on 64-bit
machines.

Fixes: 31c7c1397a ("firmware: arm_scmi: Add v3.2 perf level indexing mode support")
Reported-by: Sibi Sankar <quic_sibis@quicinc.com>
Closes: https://lore.kernel.org/all/20231129065748.19871-3-quic_sibis@quicinc.com/
Cc: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20231130204343.503076-2-sudeep.holla@arm.com
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-13 18:45:15 +01:00
Ulf Hansson
4893588806 firmware: arm_scmi: Simplify error path in scmi_dvfs_device_opps_add()
[ Upstream commit 033ca4de12 ]

Let's simplify the code in scmi_dvfs_device_opps_add() by using
dev_pm_opp_remove_all_dynamic() in the error path.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230925131715.138411-8-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Stable-dep-of: 77f5032e94 ("firmware: arm_scmi: Fix possible frequency truncation when using level indexing mode")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-13 18:45:15 +01:00
Sudeep Holla
1ea9f8abe3 firmware: arm_scmi: Fix frequency truncation by promoting multiplier type
[ Upstream commit 8e3c98d918 ]

Fix the possible frequency truncation for all values equal to or greater
4GHz on 64bit machines by updating the multiplier 'mult_factor' to
'unsigned long' type. It is also possible that the multiplier itself can
be greater than or equal to 2^32. So we need to also fix the equation
computing the value of the multiplier.

Fixes: a9e3fbfaa0 ("firmware: arm_scmi: add initial support for performance protocol")
Reported-by: Sibi Sankar <quic_sibis@quicinc.com>
Closes: https://lore.kernel.org/all/20231129065748.19871-3-quic_sibis@quicinc.com/
Cc: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20231130204343.503076-1-sudeep.holla@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-13 18:45:15 +01:00
Ulf Hansson
c3af26f536 firmware: arm_scmi: Extend perf protocol ops to get information of a domain
[ Upstream commit 3d99ed6072 ]

Similar to other protocol ops, it's useful for an scmi module driver to get
some generic information of a performance domain. Therefore, let's add a
new callback to provide this information. The information is currently
limited to the name of the performance domain and whether the set-level
operation is supported, although this can easily be extended if we find the
need for it.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-3-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Stable-dep-of: 8e3c98d918 ("firmware: arm_scmi: Fix frequency truncation by promoting multiplier type")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-13 18:45:15 +01:00
Ulf Hansson
9c78a21a5a firmware: arm_scmi: Extend perf protocol ops to get number of domains
[ Upstream commit e9090e70e6 ]

Similar to other protocol ops, it's useful for an scmi module driver to get
the number of supported performance domains, hence let's make this
available by adding a new perf protocol callback. Note that, a user is
being added from subsequent changes.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230825112633.236607-2-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Stable-dep-of: 8e3c98d918 ("firmware: arm_scmi: Fix frequency truncation by promoting multiplier type")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-13 18:45:15 +01:00
Michael Roth
589959bf46 efi/unaccepted: Fix off-by-one when checking for overlapping ranges
[ Upstream commit 01b1e3ca0e ]

When a task needs to accept memory it will scan the accepting_list
to see if any ranges already being processed by other tasks overlap
with its range. Due to an off-by-one in the range comparisons, a task
might falsely determine that an overlapping range is being accepted,
leading to an unnecessary delay before it begins processing the range.

Fix the off-by-one in the range comparison to prevent this and slightly
improve performance.

Fixes: 50e782a86c ("efi/unaccepted: Fix soft lockups caused by parallel memory acceptance")
Link: https://lore.kernel.org/linux-mm/20231101004523.vseyi5bezgfaht5i@amd.com/T/#me2eceb9906fcae5fe958b3fe88e41f920f8335b6
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-08 08:52:23 +01:00
Kathiravan Thirumoorthy
df56691a37 firmware: qcom_scm: use 64-bit calling convention only when client is 64-bit
commit 3337a6fea2 upstream.

Per the "SMC calling convention specification", the 64-bit calling
convention can only be used when the client is 64-bit. Whereas the
32-bit calling convention can be used by either a 32-bit or a 64-bit
client.

Currently during SCM probe, irrespective of the client, 64-bit calling
convention is made, which is incorrect and may lead to the undefined
behaviour when the client is 32-bit. Let's fix it.

Cc: stable@vger.kernel.org
Fixes: 9a434cee77 ("firmware: qcom_scm: Dynamically support SMCCC and legacy conventions")
Reviewed-By: Elliot Berman <quic_eberman@quicinc.com>
Signed-off-by: Kathiravan Thirumoorthy <quic_kathirav@quicinc.com>
Link: https://lore.kernel.org/r/20230925-scm-v3-1-8790dff6a749@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 17:20:03 +00:00
Sumit Gupta
9c9312fccd firmware: tegra: Add suspend hook and reset BPMP IPC early on resume
[ Upstream commit ea608a01d4 ]

Add suspend hook and a 'suspended' field in the 'struct tegra_bpmp'
to mark if BPMP is suspended. Also, add a 'flags' field in the
'struct tegra_bpmp_message' whose 'TEGRA_BPMP_MESSAGE_RESET' bit can be
set from the Tegra MC driver to signal that the reset of BPMP IPC
channels is required before sending MRQ to the BPMP FW. Together both
the fields allow us to handle any requests that might be sent too soon
as they can cause hang during system resume.

One case where we see BPMP requests being sent before the BPMP driver
has resumed is the memory bandwidth requests which are triggered by
onlining the CPUs during system resume. The CPUs are onlined before the
BPMP has resumed and we need to reset the BPMP IPC channels to handle
these requests.

The additional check for 'flags' is done to avoid any un-intended BPMP
IPC reset if the tegra_bpmp_transfer*() API gets called during suspend
sequence after the BPMP driver is suspended.

Fixes: f41e1442ac ("cpufreq: tegra194: add OPP support and set bandwidth")
Co-developed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:16 +01:00
Sudeep Holla
38dd0c2905 firmware: arm_ffa: Allow the FF-A drivers to use 32bit mode of messaging
[ Upstream commit 2d698e8b4f ]

An FF-A ABI could support both the SMC32 and SMC64 conventions.
A callee that runs in the AArch64 execution state and implements such
an ABI must implement both SMC32 and SMC64 conventions of the ABI.

So the FF-A drivers will need the option to choose the mode irrespective
of FF-A version and the partition execution mode flag in the partition
information.

Let us remove the check on the FF-A version for allowing the selection
of 32bit mode of messaging. The driver will continue to set the 32-bit
mode if the partition execution mode flag specified that the partition
supports only 32-bit execution.

Fixes: 106b11b1cc ("firmware: arm_ffa: Set up 32bit execution mode flag using partiion property")
Link: https://lore.kernel.org/r/20231005142823.278121-1-sudeep.holla@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:16 +01:00
Sudeep Holla
c153ef01dd firmware: arm_ffa: Assign the missing IDR allocation ID to the FFA device
[ Upstream commit 7d0bc6360f ]

Commit 19b8766459 ("firmware: arm_ffa: Fix FFA device names for logical
partitions") added an ID to the FFA device using ida_alloc() and append
the same to "arm-ffa" to make up a unique device name. However it missed
to stash the id value in ffa_dev to help freeing the ID later when the
device is destroyed.

Due to the missing/unassigned ID in FFA device, we get the following
warning when the FF-A device is unregistered.

  |   ida_free called for id=0 which is not allocated.
  |   WARNING: CPU: 7 PID: 1 at lib/idr.c:525 ida_free+0x114/0x164
  |   CPU: 7 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc4 #209
  |   pstate: 61400009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
  |   pc : ida_free+0x114/0x164
  |   lr : ida_free+0x114/0x164
  |   Call trace:
  |    ida_free+0x114/0x164
  |    ffa_release_device+0x24/0x3c
  |    device_release+0x34/0x8c
  |    kobject_put+0x94/0xf8
  |    put_device+0x18/0x24
  |    klist_devices_put+0x14/0x20
  |    klist_next+0xc8/0x114
  |    bus_for_each_dev+0xd8/0x144
  |    arm_ffa_bus_exit+0x30/0x54
  |    ffa_init+0x68/0x330
  |    do_one_initcall+0xdc/0x250
  |    do_initcall_level+0x8c/0xac
  |    do_initcalls+0x54/0x94
  |    do_basic_setup+0x1c/0x28
  |    kernel_init_freeable+0x104/0x170
  |    kernel_init+0x20/0x1a0
  |    ret_from_fork+0x10/0x20

Fix the same by actually assigning the ID in the FFA device this time
for real.

Fixes: 19b8766459 ("firmware: arm_ffa: Fix FFA device names for logical partitions")
Link: https://lore.kernel.org/r/20231003085932.3553985-1-sudeep.holla@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:16 +01:00
Dhruva Gole
17f15d15a3 firmware: ti_sci: Mark driver as non removable
[ Upstream commit 7b7a224b1b ]

The TI-SCI message protocol provides a way to communicate between
various compute processors with a central system controller entity. It
provides the fundamental device management capability and clock control
in the SOCs that it's used in.

The remove function failed to do all the necessary cleanup if
there are registered users. Some things are freed however which
likely results in an oops later on.

Ensure that the driver isn't unbound by suppressing its bind and unbind
sysfs attributes. As the driver is built-in there is no way to remove
device once bound.

We can also remove the ti_sci_remove call along with the
ti_sci_debugfs_destroy as there are no callers for it any longer.

Fixes: aa276781a6 ("firmware: Add basic support for TI System Control Interface (TI-SCI) protocol")
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Closes: https://lore.kernel.org/linux-arm-kernel/20230216083908.mvmydic5lpi3ogo7@pengutronix.de/
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Link: https://lore.kernel.org/r/20230921091025.133130-1-d-gole@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:59:15 +01:00
Linus Torvalds
3a568e3a96 ARM: SoC fixes for 6.7, part 3
A couple of platforms have some last-minute fixes for 6.7, in particular
 
  - riscv gets some fixes for noncoherent DMA on the renesas and thead
    platforms and dts fix for SPI on the visionfive 2 board
 
  - Qualcomm Snapdragon gets three dts fixes to address board specific
    regressions on the pmic and gpio nodes
 
  - Rockchip platforms get multiple dts fixes to address issues on
    the recent rk3399 platform as well as the older rk3128 platform
    that apparently regressed a while ago.
 
  - TI OMAP gets some trivial code and dts fixes and a regression fix
    for the omap1 ams-delta modem
 
  - NXP i.MX firmware has one fix for a use-after-free but in its
    error handling.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmU6hBgACgkQYKtH/8kJ
 Uiejsw//ZqOVJwK6fQRR2tx8k8Tg5x7q1KlpuxNW6JAbsYcNZF8OeEQYvp+fZP/c
 x8fDYYAc/02w++2U5QXGWm615359GKCdWxPivop51FJ7Try1Ij0KC3MJz4U2F65J
 ZdwnVsAukYRDzNTmDu08BRsLXjsglQhZnuXxshsZcoe8mZRnDukYVPMmW12thitY
 6R/c77kW1fvjxJt2M4vbqbOoXB1hXlsGl/l0HrAqN3OyqDD7lsak3byI1+x5nXzU
 n9EA9sC5wnnj/06LpW/b5OSBWPgteIRJauTsEy/zLdD1oPWgMT3kyjG4GZBK3bXo
 8pfeuom7ujqaWsDmeIPlwWRNChGy99XmlGaC+dciD1sVMY2/phQfucBlddGl5JDX
 UO8EwATQ7Hy+PZwjjatwdon4sngs5MwHiGpmNhtEwAARQSLhLsvY290RCZFCoXgb
 8rio7je/c/wgT28KJb/kXZHYoaNVl9Za24l+oyLCTzel5CGON4vE6Y1nPO9+tcyz
 fttxABZs+DN5BbmABuVVrTRJUGCBCsNWZY33vgYCCdZditXTYWfOH6BkO4NtYzsI
 QUG2mkykTfmxWnwmWODShAEcpJTP5ck9eZK2edujEK9I0m6dLHaUbZPNoXkpe4l3
 U1F4QnGGCjff6o4W9bWbOj/SgFAC9q9C7KBYIom3hpN13Ik3rpA=
 =6/SQ
 -----END PGP SIGNATURE-----

Merge tag 'soc-fixes-6.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "A couple of platforms have some last-minute fixes, in particular:

   - riscv gets some fixes for noncoherent DMA on the renesas and thead
     platforms and dts fix for SPI on the visionfive 2 board

   - Qualcomm Snapdragon gets three dts fixes to address board specific
     regressions on the pmic and gpio nodes

   - Rockchip platforms get multiple dts fixes to address issues on the
     recent rk3399 platform as well as the older rk3128 platform that
     apparently regressed a while ago.

   - TI OMAP gets some trivial code and dts fixes and a regression fix
     for the omap1 ams-delta modem

   - NXP i.MX firmware has one fix for a use-after-free but in its error
     handling"

* tag 'soc-fixes-6.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (25 commits)
  soc: renesas: ARCH_R9A07G043 depends on !RISCV_ISA_ZICBOM
  riscv: only select DMA_DIRECT_REMAP from RISCV_ISA_ZICBOM and ERRATA_THEAD_PBMT
  riscv: RISCV_NONSTANDARD_CACHE_OPS shouldn't depend on RISCV_DMA_NONCOHERENT
  riscv: dts: thead: set dma-noncoherent to soc bus
  arm64: dts: rockchip: Fix i2s0 pin conflict on ROCK Pi 4 boards
  arm64: dts: rockchip: Add i2s0-2ch-bus-bclk-off pins to RK3399
  clk: ti: Fix missing omap5 mcbsp functional clock and aliases
  clk: ti: Fix missing omap4 mcbsp functional clock and aliases
  ARM: OMAP1: ams-delta: Fix MODEM initialization failure
  soc: renesas: Make ARCH_R9A07G043 depend on required options
  riscv: dts: starfive: visionfive 2: correct spi's ss pin
  firmware/imx-dsp: Fix use_after_free in imx_dsp_setup_channels()
  ARM: OMAP: timer32K: fix all kernel-doc warnings
  ARM: omap2: fix a debug printk
  ARM: dts: rockchip: Fix timer clocks for RK3128
  ARM: dts: rockchip: Add missing quirk for RK3128's dma engine
  ARM: dts: rockchip: Add missing arm timer interrupt for RK3128
  ARM: dts: rockchip: Fix i2c0 register address for RK3128
  arm64: dts: rockchip: set codec system-clock-fixed on px30-ringneck-haikou
  arm64: dts: rockchip: use codec as clock master on px30-ringneck-haikou
  ...
2023-10-26 08:17:26 -10:00
Linus Torvalds
70e65afc23 Final set of EFI tweaks for v6.6:
- don't try to print warnings to the console when it is no longer
   available
 - fix theoretical memory leak in SSDT override handling
 - make sure that the boot_params global variable is set before the KASLR
   code attempts to hash it for 'randomness'
 - avoid soft lockups in the memory acceptance code
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQQQm/3uucuRGn1Dmh0wbglWLn0tXAUCZTKmyAAKCRAwbglWLn0t
 XOvWAQCz+MYqhf3HbmsyuzEV/HWxEw9gf+KGqSN9wmCrOI5nRAEA7pIWUpZ2e6Jt
 eW/6DiyPZ+o7xLMX6J01vLROmQt1ogo=
 =iVui
 -----END PGP SIGNATURE-----

Merge tag 'efi-fixes-for-v6.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI fixes from Ard Biesheuvel:
 "The boot_params pointer fix uses a somewhat ugly extern struct
  declaration but this will be cleaned up the next cycle.

   - don't try to print warnings to the console when it is no longer
     available

   - fix theoretical memory leak in SSDT override handling

   - make sure that the boot_params global variable is set before the
     KASLR code attempts to hash it for 'randomness'

   - avoid soft lockups in the memory acceptance code"

* tag 'efi-fixes-for-v6.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi/unaccepted: Fix soft lockups caused by parallel memory acceptance
  x86/boot: efistub: Assign global boot_params variable
  efi: fix memory leak in krealloc failure handling
  x86/efistub: Don't try to print after ExitBootService()
2023-10-22 07:05:28 -10:00
Ard Biesheuvel
c03d21f05e Merge 3rd batch of EFI fixes into efi/urgent 2023-10-20 18:11:06 +02:00
Kirill A. Shutemov
50e782a86c efi/unaccepted: Fix soft lockups caused by parallel memory acceptance
Michael reported soft lockups on a system that has unaccepted memory.
This occurs when a user attempts to allocate and accept memory on
multiple CPUs simultaneously.

The root cause of the issue is that memory acceptance is serialized with
a spinlock, allowing only one CPU to accept memory at a time. The other
CPUs spin and wait for their turn, leading to starvation and soft lockup
reports.

To address this, the code has been modified to release the spinlock
while accepting memory. This allows for parallel memory acceptance on
multiple CPUs.

A newly introduced "accepting_list" keeps track of which memory is
currently being accepted. This is necessary to prevent parallel
acceptance of the same memory block. If a collision occurs, the lock is
released and the process is retried.

Such collisions should rarely occur. The main path for memory acceptance
is the page allocator, which accepts memory in MAX_ORDER chunks. As long
as MAX_ORDER is equal to or larger than the unit_size, collisions will
never occur because the caller fully owns the memory block being
accepted.

Aside from the page allocator, only memblock and deferered_free_range()
accept memory, but this only happens during boot.

The code has been tested with unit_size == 128MiB to trigger collisions
and validate the retry codepath.

Fixes: 2053bc57f3 ("efi: Add unaccepted memory support")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Michael Roth <michael.roth@amd.com
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Michael Roth <michael.roth@amd.com>
[ardb: drop unnecessary cpu_relax() call]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-10-20 18:10:06 +02:00
Ard Biesheuvel
db7724134c x86/boot: efistub: Assign global boot_params variable
Now that the x86 EFI stub calls into some APIs exposed by the
decompressor (e.g., kaslr_get_random_long()), it is necessary to ensure
that the global boot_params variable is set correctly before doing so.

Note that the decompressor and the kernel proper carry conflicting
declarations for the global variable 'boot_params' so refer to it via an
alias to work around this.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-10-17 08:33:13 +02:00
Arnd Bergmann
36fb6a3ccf i.MX fixes for 6.6, round 2:
- Fix an use_after_free bug in imx_dsp_setup_channels() that is
   introduced by commit e527adfb9b ("firmware: imx-dsp: Fix an error
   handling path in imx_dsp_setup_channels()")
 -----BEGIN PGP SIGNATURE-----
 
 iQFIBAABCgAyFiEEFmJXigPl4LoGSz08UFdYWoewfM4FAmUrqhMUHHNoYXduZ3Vv
 QGtlcm5lbC5vcmcACgkQUFdYWoewfM7a/Af+Pdn3GR+/DPFAI2/YmntzdAYy4N+w
 7OY7TildeYe70k876BKd2HECk6bdb77USEBbvBi52UAZxVVeYIGKPXLXbDtaLp9s
 y86ITH4HAMZl4NB3MD552fCe+HNXVZAif4MDWzbScUKVm55oJ7pnNd3kgxI3D3VJ
 U7lKhAtaKsd0ezNM09Z1DQCaj2C5YFmpUu0mewiUlyRK9Hhnu5q6jISxIRBNo5uV
 YhKdT1U6LsfYtJm3GVuLl1LrjgpGWArjK1dyUN8NmSB4n1Ip2H2a34xKPbw9DMgn
 oJnwyRhQRibNf6/eLd21AW5WQoeY5IVDT61p8J0H0uHDb5hxOM39rqilUQ==
 =2M5c
 -----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmUtRfkACgkQYKtH/8kJ
 Uidfyw/7BS/vdANa1cPf+qHg4Q7Bp4Vi8RDrklp8ZGl4ZCvCEOdA7tryUEUNVj66
 wnd83KNuYlxPhzLxM/Ct52PD+Uuamz+NBBYDIhlp1NQ+Ezibr7NO7bYGCqtZHki+
 QXWdTNcSp8rIU3tDhznc3PVZur17jDm4yiPPRQkoZrJOYe7PY1F/0WwCaBMvBv5W
 v9SGHpSqXjAR3/rJHuLmiQcaWlScrzSBLM8ygoLLb7YYeIEqwHMKkHeddTMQfWJu
 o9mUvqzTT3A509oUseo1lpnIATJcwX9s2o6GYqyTC+uUSe8PU3AhObTOdXQp5m6Q
 mhuKB5q/4/vr/3Y3slIZWWmosT6ld8czpwxDAtiv5II3ipmf1lgaWJSY+n6DDcRA
 HIISHEcruP1Lly06xFumaoMC6R9OyagoxxNHw8zECUqx7PrGarn0iiMT9fhAL6W2
 vC/23Da37tYQsFJWCNdhnxYIEevS4mPdGrhH4clJb1NI9R/eIfbSAKvqrNqOBy4W
 HJPMP7ZPwaT/jM4tRMF5VDDbndi6fj9gKE7HXhR1CiGGeH7epAyIm7gr69pyrb+6
 J+vvKWUZJKxHmfSKrqIJ1XSAv02jRt0E1z+wPcyDr+WKzNgMNn6b5ZNrSUUkLajB
 ryzVZ9CH1ZjOL6dRZFPiqtbvarNCwA5wHbkyo132RWOBAohK5xg=
 =Lvfj
 -----END PGP SIGNATURE-----

Merge tag 'imx-fixes-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes

i.MX fixes for 6.6, round 2:

- Fix an use_after_free bug in imx_dsp_setup_channels() that is
  introduced by commit e527adfb9b ("firmware: imx-dsp: Fix an error
  handling path in imx_dsp_setup_channels()")

* tag 'imx-fixes-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  firmware/imx-dsp: Fix use_after_free in imx_dsp_setup_channels()

Link: https://lore.kernel.org/r/20231015090202.GW819755@dragon
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-10-16 16:17:29 +02:00
Kuan-Wei Chiu
0d3ad19179 efi: fix memory leak in krealloc failure handling
In the previous code, there was a memory leak issue where the
previously allocated memory was not freed upon a failed krealloc
operation. This patch addresses the problem by releasing the old memory
before setting the pointer to NULL in case of a krealloc failure. This
ensures that memory is properly managed and avoids potential memory
leaks.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-10-13 12:32:37 +02:00
Nikolay Borisov
ff07186b4d x86/efistub: Don't try to print after ExitBootService()
setup_e820() is executed after UEFI's ExitBootService has been called.
This causes the firmware to throw an exception because the Console IO
protocol is supposed to work only during boot service environment. As
per UEFI 2.9, section 12.1:

 "This protocol is used to handle input and output of text-based
 information intended for the system user during the operation of code
 in the boot services environment."

So drop the diagnostic warning from this function. We might add back a
warning that is issued later when initializing the kernel itself.

Signed-off-by: Nikolay Borisov <nik.borisov@suse.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-10-13 12:19:37 +02:00
Hao Ge
1558b1a8dd firmware/imx-dsp: Fix use_after_free in imx_dsp_setup_channels()
dsp_chan->name and chan_name points to same block of memory,
because dev_err still needs to be used it,so we need free
it's memory after use to avoid use_after_free.

Fixes: e527adfb9b ("firmware: imx-dsp: Fix an error handling path in imx_dsp_setup_channels()")
Signed-off-by: Hao Ge <gehao@kylinos.cn>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2023-10-10 10:30:29 +08:00
Linus Torvalds
e402b08634 ARM: SoC fixes for 6.6
These are teh latest bug fixes that have come up in the soc tree.
 Most of these are fairly minor. Most notably, the majority of
 changes this time are not for dts files as usual.
 
  - Updates to the addresses of the broadcom and aspeed entries in the
    MAINTAINERS file.
 
  - Defconfig updates to address a regression on samsung and a build
    warning from an unknown Kconfig symbol
 
  - Build fixes for the StrongARM and Uniphier platforms
 
  - Code fixes for SCMI and FF-A firmware drivers, both of which had
    a simple bug that resulted in invalid data, and a lesser fix for
    the optee firmware driver
 
  - Multiple fixes for the recently added loongson/loongarch "guts"
    soc driver
 
  - Devicetree fixes for RISC-V on the startfive platform, addressing
    issues with NOR flash, usb and uart.
 
  - Multiple fixes for NXP i.MX8/i.MX9 dts files, fixing problems
    with clock, gpio, hdmi settings and the Makefile
 
  - Bug fixes for i.MX firmware code and the OCOTP soc driver
 
  - Multiple fixes for the TI sysc bus driver
 
  - Minor dts updates for TI omap dts files, to address boot
    time warnings and errors
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmUYkbMACgkQYKtH/8kJ
 UieVvhAAxBNwvYsM7YCqmcD0xENAwMam3+zVEsDNac6yp4k1zrJxPItYeqx65qvj
 de3/1toUcq5q/XN1MQYyIdHrL4QX/I3KG8+SJB/X9z0if882CUtC/1fd9d7Mj0hu
 K7T7JZHDUj2rk+6Bh6sLRp6QmuS2KcKErYFlASXqqg49MddjbB8/QtYPZEAUOlmK
 x4l9trnno42gvzjkNba/w1uiOA1WIwUp6d6VoM7oxIiFomHxBBZf1mzTgXaNDNvN
 2vf+kumhQNvC3tKOUZNxps4N21N6kz0MAad/VcCKUyQ1bDTicdVwkTKUTrHs+hcu
 EauWObm+fFfdSTflQ3R9+6ooDN70CCpDmS+ZdoFP/Nt+h9m/TcNYHp5mtr3gt9+O
 cDkkGPKQyVBw0HjEG6yzEfYnPJ8w7v/+zpnie4Drc61i/kb8ETVNd9eOJTftvsFu
 QcsANKdeZOc/64ZL27FD1ZZrvDWJsIDVG3dcX2+AgoZhjo0M3HGKv1LtWqJhvspU
 lCzGNBsjcG/bQMupVxgomRhvg9hWWnXLTp949dOESecx4iUDEXl3nCo0+efXB2Tx
 DNLnMEXC1F/B2GdYRUU61fmGVwIgItLJtyYFB8Miw+id+K0k8+uaklq2dHmLZOtq
 FWbCB9oMks7q3lcEn1GJeIYFetuO+dmSEam/Hcg2hmW0Ke1ZZQI=
 =HAuE
 -----END PGP SIGNATURE-----

Merge tag 'soc-fixes-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "These are the latest bug fixes that have come up in the soc tree. Most
  of these are fairly minor. Most notably, the majority of changes this
  time are not for dts files as usual.

   - Updates to the addresses of the broadcom and aspeed entries in the
     MAINTAINERS file.

   - Defconfig updates to address a regression on samsung and a build
     warning from an unknown Kconfig symbol

   - Build fixes for the StrongARM and Uniphier platforms

   - Code fixes for SCMI and FF-A firmware drivers, both of which had a
     simple bug that resulted in invalid data, and a lesser fix for the
     optee firmware driver

   - Multiple fixes for the recently added loongson/loongarch "guts" soc
     driver

   - Devicetree fixes for RISC-V on the startfive platform, addressing
     issues with NOR flash, usb and uart.

   - Multiple fixes for NXP i.MX8/i.MX9 dts files, fixing problems with
     clock, gpio, hdmi settings and the Makefile

   - Bug fixes for i.MX firmware code and the OCOTP soc driver

   - Multiple fixes for the TI sysc bus driver

   - Minor dts updates for TI omap dts files, to address boot time
     warnings and errors"

* tag 'soc-fixes-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (35 commits)
  MAINTAINERS: Fix Florian Fainelli's email address
  arm64: defconfig: enable syscon-poweroff driver
  ARM: locomo: fix locomolcd_power declaration
  soc: loongson: loongson2_guts: Remove unneeded semicolon
  soc: loongson: loongson2_guts: Convert to devm_platform_ioremap_resource()
  soc: loongson: loongson_pm2: Populate children syscon nodes
  dt-bindings: soc: loongson,ls2k-pmc: Allow syscon-reboot/syscon-poweroff as child
  soc: loongson: loongson_pm2: Drop useless of_device_id compatible
  dt-bindings: soc: loongson,ls2k-pmc: Use fallbacks for ls2k-pmc compatible
  soc: loongson: loongson_pm2: Add dependency for INPUT
  arm64: defconfig: remove CONFIG_COMMON_CLK_NPCM8XX=y
  ARM: uniphier: fix cache kernel-doc warnings
  MAINTAINERS: aspeed: Update Andrew's email address
  MAINTAINERS: aspeed: Update git tree URL
  firmware: arm_ffa: Don't set the memory region attributes for MEM_LEND
  arm64: dts: imx: Add imx8mm-prt8mm.dtb to build
  arm64: dts: imx8mm-evk: Fix hdmi@3d node
  soc: imx8m: Enable OCOTP clock for imx8mm before reading registers
  arm64: dts: imx8mp-beacon-kit: Fix audio_pll2 clock
  arm64: dts: imx8mp: Fix SDMA2/3 clocks
  ...
2023-09-30 18:41:37 -07:00
Arnd Bergmann
5106e65f23 Arm SCMI fix for v6.6
A single fix to address scmi_perf_attributes_get() using the protocol
 version even before it was populated and ending up with unexpected
 bogowatts power scale.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEunHlEgbzHrJD3ZPhAEG6vDF+4pgFAmUUGkkACgkQAEG6vDF+
 4phm7g/+LjCMNZ0uxp/qxcZszFJln2wO2MFnY2X55o/anFlLoMQdeDlzBgGGP5Ul
 UmMo29Aq0n6FmPkrj2oV+3QR5oRKSauSbkLDxYGP4GVxpZ8zC8YotNV4z9XfxbnZ
 +SoZflXFCO/P/lPq7MMVJNcB4WqQjUv+yg9uHaejN2kXwhmntxoUqYb+82TgL/No
 Vb9rTkvRCLO6K/jxUgIWT0uwu1aBx7yOzx74Fe79IwWgGCdikk18hR13KhzsxnVz
 FHgoGnoo3cffx6gZPKNTIH032pSn24JuYRxT+FCY8IXbZYAkeHG8L5AklFDBRcHs
 zKOjnmAcPSNYDSaC5BpaJo6J7qbXnGiCUVZWlD5UzjVvOsdQRElDlQRpxwbAoRED
 3jxOSAN8V1GnC5cZvAPmMKtJk/5/2tw3pxOg4fxuvXVhetwg4fEiFghTzZN3N028
 yMpciPRU5M5EuROGLs6+NGdK93aLsDDYPnOoPe4jdBD77M0WcxrruC9I80wn6yQR
 +qxwlooebt9WR+ZkOYnsIBsWcRbvn/dMvnotTM7Tm2gblK2uVmhySKjYR931/p1D
 6gDOilbUebN/RN1CPcP1NzOVl0IuRblXe3Ps5TD7liwCCzVYxD5kwfIJMC6o8Cfr
 QPkqtCRv4jPbUQdrGCOEDRD+GqiF3nNvuGUQ6mqBFFvR4h9NbPU=
 =v9wZ
 -----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmUVKAEACgkQYKtH/8kJ
 UidgWRAA0D9EEbxqHt5WjBW75jifD09oUD1+XnyYCIVa9fyB11uInUJxAjG/xSGg
 JSqK54TRnK32OpwFeClv6k38WdpRw3GemCBNxvAXrF4wN4f1xKD0O0rM46U0AoFb
 fSqoO3TZN2wgOJbdPmIUSBJJ9To2jquQeKi+qDZ5o2utUfjVHfJqVIqpZR2SPTf2
 vXoFRfPcx5rmSrXNX57U1pv1NCTp3y14RT2VJwzND/Nb8jMjxYQFWslBcFSJNTRn
 oTzdSSP4W+XZOGF13N2pfuLe2mqqSnMHeXlBD9oMvgGfFO0gAQ1xc4V1CNc6tzjc
 xrbhGYwEUqXqo+TJa8uLYbUE4aaPdkP4VBn3cNn/5BrkAooZwOAfRaNYoXFNRwZw
 nZ3e0e6qKsyA/frOt7lqFU/J81HHxEQpEKg1bVqPpuviYNRNNfms4XPrtx9+DWPd
 xdQoqUW3jGJ4yzgxh4V1ZDvIFP2/1C1gilayXxtHcoo9H3Grue9n6ApTcO1HJQaC
 JIHIwSWn2PkxZ919fPmqJHY8bFLkjJHWYRM+oPrp/Cn5B3NLQ1ICGPbDRmS5x/Vs
 mTBjjkwRVJcHmMLN+5/XdQYKRzrHAtKD8Um6V4nJ1iRkI7IQykGY4KHqmyxCRWMh
 mcMsq89suKAAimy+kTmg1kP/OYR5zAMaikQx/QsmOYgxRdAGkHU=
 =ZyGq
 -----END PGP SIGNATURE-----

Merge tag 'scmi-fix-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm SCMI fix for v6.6

A single fix to address scmi_perf_attributes_get() using the protocol
version even before it was populated and ending up with unexpected
bogowatts power scale.

* tag 'scmi-fix-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Fixup perf power-cost/microwatt support

Link: https://lore.kernel.org/r/20230927121604.158645-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-09-28 09:15:12 +02:00
Arnd Bergmann
79684f2ea3 Arm FF-A fix for v6.6
It has been reported that the driver sets the memory region attributes
 for MEM_LEND operation when the specification clearly states not to. The
 fix here addresses the issue by ensuring the memory region attributes are
 cleared for the memory lending operation.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEunHlEgbzHrJD3ZPhAEG6vDF+4pgFAmUUG70ACgkQAEG6vDF+
 4pg0Og//dteLTtj/mHej4fIL3ih0qNN6Ih1NXlqfcgc4Yw7EcLhnKZabwGy3Ybdq
 4egdPwHXLPMS7XAxg7y2WWoMA7+raFYp8vYOWOjHdTPmgDjzxHMybMP3J31RSjfL
 gi4DoF8g2EF0bwtMvk0A3pTqgQG3YOfMupf9CLPZg5XOmPVDAq5R1zn3hu/Dz/ic
 5nkJNkA3VCmLrSzfSEQtC8vDPT0pNID6sLCgByJvx6qqPKAlO6Mhpe1f93N2BMsK
 Z24SjevzPHjGFS4MwaW8evDpdTuESUd0MQBV5/yCha8gvJOK2Q0629qLM5fpii7j
 ZxHkGaj1pSj9zqCCKOxJVFanxTEJQo8dAbzz446jB7pBkeT4T4sIAsHe+Jw7QIOS
 kFT3xOfZwYpCU7nJWEgOaDuNBlHFD5ZiP922tXatX6nj7gEopVpUSg0u1R9/BMHa
 DLK3xaF/Gd38KFN52WBV98+jFyE9dUYVu1PLG+uJDvKyS6PoKKmRckNxdtPDpEeH
 Lsez4ES9dbb2c+nCrAseUeuFW1D8HBEHo705MIGsefqfqISOrh1A3oj7gEwnv6ho
 ZOLKbSHX3ufx3WOm4R8aFtRafP7ZL8X6ovQDCzzYhAitnF2bp+zfjJOkJv4X7OLV
 jz8AtdwCT6qW5rg0PCDNo8CrAYN1GA0/+ria17JpKF37Pk5hdjQ=
 =Flo6
 -----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmUVJ9oACgkQYKtH/8kJ
 UidcBRAApJskT2y1BVlZZTtyUuu9cck/dfGfzhP50XiO6m0YYr6W+RnLjWj4o/oc
 5Ct7eJsqh8jZ2XbZQfXY/eojts/xyfFq48MBWBkuMECE3M5rsjkPTu1N+WOJiVUt
 BlbLmwx5xNuK2JbSdHN/Et4xguau6ZbhZ08nW8+uHOJtxquUjCapWqN9r5cYki8V
 NQhdaaT0/YlA4sMPsCN9HkEVR0VYlHkcQo9f8onXg93rUpK3p7hWhz5pUZDJEwZE
 CSb+is4ADsNAzioLCTZh9MDMQoaduxQXzw8QjYKY6mxK1VIFDmDmblMl7UFARQs7
 ufvqzGZpCqVNrjQK7+vHXakrG5hOA2VmMRhMt60KrY4AVTgpZYNzGqpIz7dlOuxd
 8FDwjHEeYZXgtfUA6dxD19oRi49shO3HB34YrTbGi7GOOjuWJl4c3wJtR/Ps1vha
 GFnggmOqjRFYi+YBzShCn/pZGgcAHWadcLn3zklCcnNaRj+2voXyqKOkDbuhteFs
 4zt1ggvykeAQ8mU9+HwiwIZek9X7hsKI7bz2jKTV8uugqr5DDTnY7vwOtGvZochk
 GBpEZH12e5Cf9QO74Nam5kvLJqpj3orhSul0jnWZ1R8n9Obv0IH/ytthctDnP4Ek
 XFqGiBoQzDTNIjANcmr0UG46l+95J9Lbi7iyk+tX7z5+wVxkQ7U=
 =MdPT
 -----END PGP SIGNATURE-----

Merge tag 'ffa-fix-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm FF-A fix for v6.6

It has been reported that the driver sets the memory region attributes
for MEM_LEND operation when the specification clearly states not to. The
fix here addresses the issue by ensuring the memory region attributes are
cleared for the memory lending operation.

* tag 'ffa-fix-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Don't set the memory region attributes for MEM_LEND

Link: https://lore.kernel.org/r/20230927121555.158619-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-09-28 09:14:34 +02:00
Sudeep Holla
9dda117847 firmware: arm_ffa: Don't set the memory region attributes for MEM_LEND
As per the FF-A specification: section "Usage of other memory region
attributes", in a transaction to donate memory or lend memory to a single
borrower, if the receiver is a PE or Proxy endpoint, the owner must not
specify the attributes and the relayer will return INVALID_PARAMETERS
if the attributes are set.

Let us not set the memory region attributes for MEM_LEND.

Fixes: 82a8daaecf ("firmware: arm_ffa: Add support for MEM_LEND")
Reported-by: Joao Alves <joao.alves@arm.com>
Reported-by: Olivier Deprez <olivier.deprez@arm.com>
Link: https://lore.kernel.org/r/20230919-ffa_v1-1_notif-v2-13-6f3a3ca3923c@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2023-09-25 19:43:49 +01:00
Linus Torvalds
dc912ba91b EFI fixes for v6.6 take 2:
- fix boot regression on SEV-SNP (and TDX) caused by a fix in the
   preceding batch
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQQQm/3uucuRGn1Dmh0wbglWLn0tXAUCZQ1ddAAKCRAwbglWLn0t
 XOIQAP4nS3RWd2On40iOMpyfmKo8BmuM1smJC5r6xQTc55eORwEA3ezhbKZruxMp
 bU2qR0yH/aGEtyOX0lDN0NIntplQdgI=
 =ldKV
 -----END PGP SIGNATURE-----

Merge tag 'efi-fixes-for-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI fix from Ard Biesheuvel:
 "Follow-up fix for the unaccepted memory fix merged last week as part
  of the first EFI fixes batch.

  The unaccepted memory table needs to be accessible very early, even in
  cases (such as crashkernels) where the direct map does not cover all
  of DRAM, and so it is added to memblock explicitly, and subsequently
  memblock_reserve()'d as before"

* tag 'efi-fixes-for-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi/unaccepted: Make sure unaccepted table is mapped
2023-09-22 09:25:26 -07:00
Linus Torvalds
2af5acbaa7 sound fixes for 6.6-rc3
A large collection of fixes around this time.
 All small and mostly trivial fixes.
 
 - Lots of fixes for the new -Wformat-truncation warnings
 - A fix in ALSA rawmidi core regression and UMP handling
 - Series of Cirrus codec fixes
 - ASoC Intel and Realtek codec fixes
 - Usual HD- and USB-audio quirks and AMD ASoC quirks
 -----BEGIN PGP SIGNATURE-----
 
 iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmUMUWkOHHRpd2FpQHN1
 c2UuZGUACgkQLtJE4w1nLE+hdxAA0+tcf9xj7Na58P3VCD0dCBddoJ4STModW8RZ
 SnOevnjIMLa7TFKnxyBNWTgtBlKpaJ62c+/ZJJt0dgzDaYAX/6kGz9I9WN5w/81x
 JKbXemtbv32h/STmE36G3j2pILzKMVo8Iew4aghga5t7QkZZuSfj5KPiKpg0lIE4
 LGfAoaPUFvsgHGqKKP4Y2qOeGkR7LWJ6r66mtC0WMb5LNddPrdsWbscj0ZfeEceE
 p3jQMk5Iw/d/8PueIdsVL0Epq8j46L+EKaNMgdG38eJsMxhhLnDoyZ4lRwIZ5Stg
 X+BTFULw7v/ldp/vBOoJgQYkjI9g51T7H1h58oZP1xup68eE1+QVw2D/Jpx+zDv8
 TZrp3YLlWMN3YVZKxKpum0AALGELYA1eSax94sifxwMOQ2P7ctDgVUVKq2mxiPWN
 W+244dvoz1IB6ey22PRP7eSx015CHAtOosCPesSYs2M8OPsz0ckfxijz7PGcpqTD
 7NFKAilG6lkMn638A4O1PG5l/DuMoIP8/W6JWeF83yCIxTvQVIcYdFxIku4rU8Lh
 LbyHU6nV9pH+B2RDjZpPQNVNZfp/egFlLsKGaIc9Wqjuur7vjryXRNs2y2Xq/0jq
 0xJsV8xoPj4WO2u4+sFkYNMZ5AjTPUGndGURA3QMMjsDUnAxTw6e4a5yf06V9hZU
 ZaWVhRk=
 =1MuW
 -----END PGP SIGNATURE-----

Merge tag 'sound-6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A large collection of fixes around this time.

  All small and mostly trivial fixes.

   - Lots of fixes for the new -Wformat-truncation warnings

   - A fix in ALSA rawmidi core regression and UMP handling

   - Series of Cirrus codec fixes

   - ASoC Intel and Realtek codec fixes

   - Usual HD- and USB-audio quirks and AMD ASoC quirks"

* tag 'sound-6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (64 commits)
  ALSA: hda/realtek - ALC287 Realtek I2S speaker platform support
  ALSA: hda: cs35l56: Use the new RUNTIME_PM_OPS() macro
  ALSA: usb-audio: scarlett_gen2: Fix another -Wformat-truncation warning
  ALSA: rawmidi: Fix NULL dereference at proc read
  ASoC: SOF: core: Only call sof_ops_free() on remove if the probe was successful
  ASoC: SOF: Intel: MTL: Reduce the DSP init timeout
  ASoC: cs42l43: Add shared IRQ flag for shutters
  ASoC: imx-audmix: Fix return error with devm_clk_get()
  ASoC: hdaudio.c: Add missing check for devm_kstrdup
  ALSA: riptide: Fix -Wformat-truncation warning for longname string
  ALSA: cs4231: Fix -Wformat-truncation warning for longname string
  ALSA: ad1848: Fix -Wformat-truncation warning for longname string
  ALSA: hda: generic: Check potential mixer name string truncation
  ALSA: cmipci: Fix -Wformat-truncation warning
  ALSA: firewire: Fix -Wformat-truncation warning for MIDI stream names
  ALSA: firewire: Fix -Wformat-truncation warning for longname string
  ALSA: xen: Fix -Wformat-truncation warning
  ALSA: opti9x: Fix -Wformat-truncation warning
  ALSA: es1688: Fix -Wformat-truncation warning
  ALSA: cs4236: Fix -Wformat-truncation warning
  ...
2023-09-21 08:13:15 -07:00
Kirill A. Shutemov
8dbe33956d efi/unaccepted: Make sure unaccepted table is mapped
Unaccepted table is now allocated from EFI_ACPI_RECLAIM_MEMORY. It
translates into E820_TYPE_ACPI, which is not added to memblock and
therefore not mapped in the direct mapping.

This causes a crash on the first touch of the table.

Use memblock_add() to make sure that the table is mapped in direct
mapping.

Align the range to the nearest page borders. Ranges smaller than page
size are not mapped.

Fixes: e7761d827e ("efi/unaccepted: Use ACPI reclaim memory for unaccepted memory table")
Reported-by: Hongyu Ning <hongyu.ning@intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-09-19 16:11:36 +00:00
Christophe JAILLET
e527adfb9b firmware: imx-dsp: Fix an error handling path in imx_dsp_setup_channels()
If mbox_request_channel_byname() fails, the memory allocated a few lines
above still need to be freed before going to the error handling path.

Fixes: 046326989a ("firmware: imx: Save channel name for further use")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2023-09-19 14:12:04 +02:00
Richard Fitzgerald
69343ce914
firmware: cirrus: cs_dsp: Only log list of algorithms in debug build
Change the logging of each algorithm from info level to debug level.

On the original devices supported by this code there were typically only
one or two algorithms in a firmware and one or two DSPs so this logging
only used a small number of log lines.

However, for the latest devices there could be 30-40 algorithms in a
firmware and 8 DSPs being loaded in parallel, so using 300+ lines of log
for information that isn't particularly important to have logged.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230913160523.3701189-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-09-13 18:50:32 +01:00
Sibi Sankar
c3638b851b firmware: arm_scmi: Fixup perf power-cost/microwatt support
The perf power scale value would currently be reported as bogowatts if the
platform firmware supports microwatt power scale and meets the perf major
version requirements. Fix this by populating version information in the
driver private data before the call to protocol attributes is made.

CC: Chandra Sekhar Lingutla <quic_lingutla@quicinc.com>
Fixes: 3630cd8130 ("firmware: arm_scmi: Add SCMI v3.1 perf power-cost in microwatts")
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20230811204818.30928-1-quic_sibis@quicinc.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2023-09-11 10:34:05 +01:00
Ard Biesheuvel
e7761d827e efi/unaccepted: Use ACPI reclaim memory for unaccepted memory table
Kyril reports that crashkernels fail to work on confidential VMs that
rely on the unaccepted memory table, and this appears to be caused by
the fact that it is not considered part of the set of firmware tables
that the crashkernel needs to map.

This is an oversight, and a result of the use of the EFI_LOADER_DATA
memory type for this table. The correct memory type to use for any
firmware table is EFI_ACPI_RECLAIM_MEMORY (including ones created by the
EFI stub), even though the name suggests that is it specific to ACPI.
ACPI reclaim means that the memory is used by the firmware to expose
information to the operating system, but that the memory region has no
special significance to the firmware itself, and the OS is free to
reclaim the memory and use it as ordinary memory if it is not interested
in the contents, or if it has already consumed them. In Linux, this
memory is never reclaimed, but it is always covered by the kernel direct
map and generally made accessible as ordinary memory.

On x86, ACPI reclaim memory is translated into E820_ACPI, which the
kexec logic already recognizes as memory that the crashkernel may need
to to access, and so it will be mapped and accessible to the booting
crash kernel.

Fixes: 745e3ed85f ("efi/libstub: Implement support for unaccepted memory")
Reported-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2023-09-11 06:37:51 +00:00
Linus Torvalds
1b37a0a2d4 RISC-V Patches for the 6.6 Merge Window, Part 2 (try 2)
* The kernel now dynamically probes for misaligned access speed, as
   opposed to relying on a table of known implementations.
 * Support for non-coherent devices on systems using the Andes AX45MP
   core, including the RZ/Five SoCs.
 * Support for the V extension in ptrace(), again.
 * Support for KASLR.
 * Support for the BPF prog pack allocator in RISC-V.
 * A handful of bug fixes and cleanups.
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmT8eV0THHBhbG1lckBk
 YWJiZWx0LmNvbQAKCRAuExnzX7sYiQYTD/9V6asKMDdWUV+gti/gRvJsiYUjIrrK
 h4MB8hL3fHfCLBpTD4rU6K1Gx6hzPjGsxIuQyAq/hf752KB/9XUiIVziRBv2ZEBb
 GuTFCXfg0QXBUlxBZzFw5SKUuKXgRaMAQ14qjy3tfLk31YMQmBtAlEPdDM8mZOCQ
 zNI3bbdn6zASeaSMh7hwBoOJWP2ACoOEW7RcD44EDT8jb3YW5rEF86x0XtYLgJb6
 xhaR4ieIdaOLxz2RbjXj0GcPIBfhTxZbwN3fLlD8PxuGqCKn5kN03bPPwP9tMTAc
 z02EgVcSDvJWpYikuuTkPMxpSi18OZPJ6eriwOv5ccP5NXQScO09iGo7IZEM7OzO
 j1IrIXyncU4BhxlpWombU454Va+ezUlfh9uh+MrJ+Bnve3T3S9ax7AV4S8vkJZlT
 bnmJVS/g7L/7nxTQdJ3zoAo2WzFQXL0C8SR5tGo/3aRk0uYoliHy/W419f55F9GZ
 rFcc+LMqai8N4bLN3whaK0NnuodNWHoNlpcd/5ncJwecswuDkah3LWcd4rwBrWhu
 8RIkIfpdr/vTQjUVXVLeMHdKB+lST3iF1feMqJj0PfTyvTZi5yfSppjAfkAdVq+9
 lHqAjsaGdiCrOtLxb0oBR2PTDQPAm2gN2meuSMommDQR6Vul8K5WcQml9Zx9QEWA
 eDXWYDZISKYJbA==
 =s89m
 -----END PGP SIGNATURE-----

Merge tag 'riscv-for-linus-6.6-mw2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

 - The kernel now dynamically probes for misaligned access speed, as
   opposed to relying on a table of known implementations.

 - Support for non-coherent devices on systems using the Andes AX45MP
   core, including the RZ/Five SoCs.

 - Support for the V extension in ptrace(), again.

 - Support for KASLR.

 - Support for the BPF prog pack allocator in RISC-V.

 - A handful of bug fixes and cleanups.

* tag 'riscv-for-linus-6.6-mw2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (25 commits)
  soc: renesas: Kconfig: For ARCH_R9A07G043 select the required configs if dependencies are met
  riscv: Kconfig.errata: Add dependency for RISCV_SBI in ERRATA_ANDES config
  riscv: Kconfig.errata: Drop dependency for MMU in ERRATA_ANDES_CMO config
  riscv: Kconfig: Select DMA_DIRECT_REMAP only if MMU is enabled
  bpf, riscv: use prog pack allocator in the BPF JIT
  riscv: implement a memset like function for text
  riscv: extend patch_text_nosync() for multiple pages
  bpf: make bpf_prog_pack allocator portable
  riscv: libstub: Implement KASLR by using generic functions
  libstub: Fix compilation warning for rv32
  arm64: libstub: Move KASLR handling functions to kaslr.c
  riscv: Dump out kernel offset information on panic
  riscv: Introduce virtual kernel mapping KASLR
  RISC-V: Add ptrace support for vectors
  soc: renesas: Kconfig: Select the required configs for RZ/Five SoC
  cache: Add L2 cache management for Andes AX45MP RISC-V core
  dt-bindings: cache: andestech,ax45mp-cache: Add DT binding documentation for L2 cache controller
  riscv: mm: dma-noncoherent: nonstandard cache operations support
  riscv: errata: Add Andes alternative ports
  riscv: asm: vendorid_list: Add Andes Technology to the vendors list
  ...
2023-09-09 14:25:11 -07:00
Palmer Dabbelt
f578055558
Merge patch series "riscv: Introduce KASLR"
Alexandre Ghiti <alexghiti@rivosinc.com> says:

The following KASLR implementation allows to randomize the kernel mapping:

- virtually: we expect the bootloader to provide a seed in the device-tree
- physically: only implemented in the EFI stub, it relies on the firmware to
  provide a seed using EFI_RNG_PROTOCOL. arm64 has a similar implementation
  hence the patch 3 factorizes KASLR related functions for riscv to take
  advantage.

The new virtual kernel location is limited by the early page table that only
has one PUD and with the PMD alignment constraint, the kernel can only take
< 512 positions.

* b4-shazam-merge:
  riscv: libstub: Implement KASLR by using generic functions
  libstub: Fix compilation warning for rv32
  arm64: libstub: Move KASLR handling functions to kaslr.c
  riscv: Dump out kernel offset information on panic
  riscv: Introduce virtual kernel mapping KASLR

Link: https://lore.kernel.org/r/20230722123850.634544-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-09-08 11:25:13 -07:00
Alexandre Ghiti
b7ac4b8ee7
riscv: libstub: Implement KASLR by using generic functions
We can now use arm64 functions to handle the move of the kernel physical
mapping: if KASLR is enabled, we will try to get a random seed from the
firmware, if not possible, the kernel will be moved to a location that
suits its alignment constraints.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Song Shuai <songshuaishuai@tinylab.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20230722123850.634544-6-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-09-05 19:49:31 -07:00
Alexandre Ghiti
3c35d1a03c
libstub: Fix compilation warning for rv32
Fix the following warning which appears when compiled for rv32 by using
unsigned long type instead of u64.

../drivers/firmware/efi/libstub/efi-stub-helper.c: In function 'efi_kaslr_relocate_kernel':
../drivers/firmware/efi/libstub/efi-stub-helper.c:846:28: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  846 |                            (u64)_end < EFI_ALLOC_LIMIT) {

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Song Shuai <songshuaishuai@tinylab.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20230722123850.634544-5-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-09-05 19:49:30 -07:00
Alexandre Ghiti
6b56beb5f6
arm64: libstub: Move KASLR handling functions to kaslr.c
This prepares for riscv to use the same functions to handle the pĥysical
kernel move when KASLR is enabled.

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Song Shuai <songshuaishuai@tinylab.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20230722123850.634544-4-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-09-05 19:49:29 -07:00