Xiaoyao Li 9de6fe3c28 KVM: x86: Emulate split-lock access as a write in emulator ... Emulate split-lock accesses as writes if split lock detection is on to avoid #AC during emulation, which will result in a panic(). This should never occur for a well-behaved guest, but a malicious guest can manipulate the TLB to trigger emulation of a locked instruction[1]. More discussion can be found at [2][3]. [1] https://lkml.kernel.org/r/8c5b11c9-58df-38e7-a514-dc12d687b198@redhat.com [2] https://lkml.kernel.org/r/20200131200134.GD18946@linux.intel.com [3] https://lkml.kernel.org/r/20200227001117.GX9940@linux.intel.com Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Link: https://lkml.kernel.org/r/20200410115517.084300242@linutronix.de		2020-04-11 16:40:55 +02:00
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alpha	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
arc	mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS	2020-04-10 15:36:21 -07:00
arm	change email address for Pali Rohár	2020-04-10 15:36:22 -07:00
arm64	mm/memory_hotplug: add pgprot_t to mhp_params	2020-04-10 15:36:21 -07:00
c6x	mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS	2020-04-10 15:36:21 -07:00
csky	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
h8300	mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS	2020-04-10 15:36:21 -07:00
hexagon	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
ia64	mm/memory_hotplug: add pgprot_t to mhp_params	2020-04-10 15:36:21 -07:00
m68k	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
microblaze	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
mips	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
nds32	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
nios2	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
openrisc	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
parisc	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
powerpc	mm/memory_hotplug: add pgprot_t to mhp_params	2020-04-10 15:36:21 -07:00
riscv	mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS	2020-04-10 15:36:21 -07:00
s390	Merge branch 'akpm' (patches from Andrew)	2020-04-10 17:57:48 -07:00
sh	mm/memory_hotplug: add pgprot_t to mhp_params	2020-04-10 15:36:21 -07:00
sparc	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
um	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
unicore32	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
x86	KVM: x86: Emulate split-lock access as a write in emulator	2020-04-11 16:40:55 +02:00
xtensa	Merge branch 'akpm' (patches from Andrew)	2020-04-10 17:57:48 -07:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
Kconfig	dma-mapping updates for 5.7	2020-04-04 10:12:47 -07:00