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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-21 14:51:40 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-02-21 14:51:40 -0800 |
commit | 877934769e5b91798d304d4641647900ee614ce8 (patch) | |
tree | d5055afc19486841e73fcae43f00c0b10a49153e /arch/x86/kernel/signal_32.c | |
parent | 74e19ef0ff8061ef55957c3abd71614ef0f42f47 (diff) | |
parent | 7914695743d598b189d549f2f57af24aa5633705 (diff) | |
download | linux-stable-877934769e5b91798d304d4641647900ee614ce8.tar.gz linux-stable-877934769e5b91798d304d4641647900ee614ce8.tar.bz2 linux-stable-877934769e5b91798d304d4641647900ee614ce8.zip |
Merge tag 'x86_cpu_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpuid updates from Borislav Petkov:
- Cache the AMD debug registers in per-CPU variables to avoid MSR
writes where possible, when supporting a debug registers swap feature
for SEV-ES guests
- Add support for AMD's version of eIBRS called Automatic IBRS which is
a set-and-forget control of indirect branch restriction speculation
resources on privilege change
- Add support for a new x86 instruction - LKGS - Load kernel GS which
is part of the FRED infrastructure
- Reset SPEC_CTRL upon init to accomodate use cases like kexec which
rediscover
- Other smaller fixes and cleanups
* tag 'x86_cpu_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/amd: Cache debug register values in percpu variables
KVM: x86: Propagate the AMD Automatic IBRS feature to the guest
x86/cpu: Support AMD Automatic IBRS
x86/cpu, kvm: Add the SMM_CTL MSR not present feature
x86/cpu, kvm: Add the Null Selector Clears Base feature
x86/cpu, kvm: Move X86_FEATURE_LFENCE_RDTSC to its native leaf
x86/cpu, kvm: Add the NO_NESTED_DATA_BP feature
KVM: x86: Move open-coded CPUID leaf 0x80000021 EAX bit propagation code
x86/cpu, kvm: Add support for CPUID_80000021_EAX
x86/gsseg: Add the new <asm/gsseg.h> header to <asm/asm-prototypes.h>
x86/gsseg: Use the LKGS instruction if available for load_gs_index()
x86/gsseg: Move load_gs_index() to its own new header file
x86/gsseg: Make asm_load_gs_index() take an u16
x86/opcode: Add the LKGS instruction to x86-opcode-map
x86/cpufeature: Add the CPU feature bit for LKGS
x86/bugs: Reset speculation control settings on init
x86/cpu: Remove redundant extern x86_read_arch_cap_msr()
Diffstat (limited to 'arch/x86/kernel/signal_32.c')
-rw-r--r-- | arch/x86/kernel/signal_32.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c index f042dcdf1f16..9027fc088f97 100644 --- a/arch/x86/kernel/signal_32.c +++ b/arch/x86/kernel/signal_32.c @@ -31,6 +31,7 @@ #include <asm/sigframe.h> #include <asm/sighandling.h> #include <asm/smap.h> +#include <asm/gsseg.h> #ifdef CONFIG_IA32_EMULATION #include <asm/ia32_unistd.h> |