linux/arch/x86
Paolo Bonzini 6461005967 kvm: x86: fix RSM when PCID is non-zero
commit fae1a3e775 upstream.

rsm_load_state_64() and rsm_enter_protected_mode() load CR3, then
CR4 & ~PCIDE, then CR0, then CR4.

However, setting CR4.PCIDE fails if CR3[11:0] != 0.  It's probably easier
in the long run to replace rsm_enter_protected_mode() with an emulator
callback that sets all the special registers (like KVM_SET_SREGS would
do).  For now, set the PCID field of CR3 only after CR4.PCIDE is 1.

Reported-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Fixes: 660a5d517a
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-12-29 17:53:48 +01:00
..
boot x86/boot/compressed/64: Print error if 5-level paging is not supported 2017-12-20 10:10:21 +01:00
configs x86/unwind: Rename unwinder config options to 'CONFIG_UNWINDER_*' 2017-12-25 14:26:13 +01:00
crypto crypto: salsa20 - fix blkcipher_walk API usage 2017-12-20 10:10:17 +01:00
entry x86/entry: Rename SYSENTER_stack to CPU_ENTRY_AREA_entry_stack 2017-12-29 17:53:44 +01:00
events locking/barriers: Convert users of lockless_dereference() to READ_ONCE() 2017-12-25 14:26:21 +01:00
hyperv x86/virt: Add enum for hypervisors to replace x86_hyper 2017-12-25 14:26:20 +01:00
ia32 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
include init: Invoke init_espfix_bsp() from mm_init() 2017-12-29 17:53:45 +01:00
kernel init: Invoke init_espfix_bsp() from mm_init() 2017-12-29 17:53:45 +01:00
kvm kvm: x86: fix RSM when PCID is non-zero 2017-12-29 17:53:48 +01:00
lib x86/decoder: Fix and update the opcodes map 2017-12-29 17:53:42 +01:00
math-emu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mm x86/cpu_entry_area: Prevent wraparound in setup_cpu_entry_area_ptes() on 32bit 2017-12-29 17:53:45 +01:00
net bpf: fix bpf_tail_call() x64 JIT 2017-10-03 16:04:44 -07:00
oprofile x86/oprofile/ppro: Do not use __this_cpu*() in preemptible context 2017-11-08 13:01:54 +01:00
pci x86/PCI: Make broadcom_postcore_init() check acpi_disabled 2017-12-14 09:52:53 +01:00
platform x86/uv: Use the right TLB-flush API 2017-12-29 17:53:44 +01:00
power x86/entry: Remap the TSS into the CPU entry area 2017-12-25 14:26:22 +01:00
purgatory License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ras License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
realmode License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tools License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
um x86/entry: Use SYSCALL_DEFINE() macros for sys_modify_ldt() 2017-12-10 13:40:41 +01:00
video x86/video: Don't assume all FB devices are PCI devices 2016-03-15 11:08:26 +01:00
xen x86/cpu_entry_area: Move it out of the fixmap 2017-12-29 17:53:45 +01:00
.gitignore x86/build: Add arch/x86/purgatory/ make generated files to gitignore 2014-10-09 09:29:46 +02:00
Kbuild Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-09-07 09:25:15 -07:00
Kconfig x86/Kconfig: Limit NR_CPUS on 32-bit to a sane amount 2017-12-29 17:53:42 +01:00
Kconfig.cpu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.debug x86/unwind: Make CONFIG_UNWINDER_ORC=y the default in kconfig for 64-bit 2017-12-25 14:26:14 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.um License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile_32.cpu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00