Jim Mattson ab112cc573 perf/x86/kvm: Fix Broadwell Xeon stepping in isolation_ucodes[] ... [ Upstream commit 4b2f1e59229b9da319d358828cdfa4ddbc140769 ] The only stepping of Broadwell Xeon parts is stepping 1. Fix the relevant isolation_ucodes[] entry, which previously enumerated stepping 2. Although the original commit was characterized as an optimization, it is also a workaround for a correctness issue. If a PMI arrives between kvm's call to perf_guest_get_msrs() and the subsequent VM-entry, a stale value for the IA32_PEBS_ENABLE MSR may be restored at the next VM-exit. This is because, unbeknownst to kvm, PMI throttling may clear bits in the IA32_PEBS_ENABLE MSR. CPUs with "PEBS isolation" don't suffer from this issue, because perf_guest_get_msrs() doesn't report the IA32_PEBS_ENABLE value. Fixes: 9b545c04ab ("perf/x86/kvm: Avoid unnecessary work in guest filtering") Signed-off-by: Jim Mattson <jmattson@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Peter Shier <pshier@google.com> Acked-by: Andi Kleen <ak@linux.intel.com> Link: https://lkml.kernel.org/r/20210422001834.1748319-1-jmattson@google.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-04-28 13:40:00 +02:00
..
boot	A set of fixes for x86:	2020-12-06 11:22:39 -08:00
configs
crypto	crypto: x86/aes-ni-xts - use direct calls to and 4-way stride	2021-03-20 10:43:43 +01:00
entry	x86/entry: Fix entry/exit mismatch on failed fast 32-bit syscalls	2021-03-17 17:06:36 +01:00
events	perf/x86/kvm: Fix Broadwell Xeon stepping in isolation_ucodes[]	2021-04-28 13:40:00 +02:00
hyperv	x86/hyperv: Fix kexec panic/hang issues	2021-01-27 11:54:57 +01:00
ia32
include	ACPI: processor: Fix build when CONFIG_ACPI_PROCESSOR=m	2021-04-14 08:41:58 +02:00
kernel	ACPI: x86: Call acpi_boot_table_init() after acpi_table_upgrade()	2021-04-21 13:00:51 +02:00
kvm	KVM: VMX: Don't use vcpu->run->internal.ndata as an array index	2021-04-21 13:00:59 +02:00
lib	x86/sev-es: Use __copy_from_user_inatomic()	2021-03-17 17:06:36 +01:00
math-emu
mm	x86/mem_encrypt: Correct physical address calculation in __set_clr_pte_enc()	2021-03-30 14:32:07 +02:00
net	bpf, x86: Validate computation of branch displacements for x86-32	2021-04-10 13:36:11 +02:00
oprofile
pci	x86/pci: Create PCI/MSI irqdomain after x86_init.pci.arch_init()	2021-02-17 11:02:28 +01:00
platform	x86/efi: Remove EFI PGD build time checks	2021-02-17 11:02:24 +01:00
power
purgatory
ras
realmode
tools	x86/build: Treat R_386_PLT32 relocation as R_386_PC32	2021-03-07 12:34:04 +01:00
um
video
xen	Revert "xen: fix p2m size in dom0 for disabled memory hotplug case"	2021-03-30 14:32:08 +02:00
.gitignore
Kbuild
Kconfig	fanotify: Fix sys_fanotify_mark() on native x86-32	2021-01-17 14:16:59 +01:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug
Makefile	x86/build: Turn off -fcf-protection for realmode targets	2021-04-10 13:36:09 +02:00
Makefile_32.cpu
Makefile.um