diff options
| author | Zeng Guang <guang.zeng@intel.com> | 2022-02-16 22:04:33 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-03-15 11:50:50 +0100 |
| commit | cdec2b753b487d9e8aab028231c35d87789ea083 (patch) | |
| tree | dfa03fe16915fbf6d80ea43012a502e9d1de17d7 /target/i386/machine.c | |
| parent | e56dd3c70abb31893c61ac834109fa7a38841330 (diff) | |
x86: Support XFD and AMX xsave data migration
XFD(eXtended Feature Disable) allows to enable a
feature on xsave state while preventing specific
user threads from using the feature.
Support save and restore XFD MSRs if CPUID.D.1.EAX[4]
enumerate to be valid. Likewise migrate the MSRs and
related xsave state necessarily.
Signed-off-by: Zeng Guang <guang.zeng@intel.com>
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20220217060434.52460-8-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/machine.c')
| -rw-r--r-- | target/i386/machine.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/target/i386/machine.c b/target/i386/machine.c index 6202f47793..7c54bada81 100644 --- a/target/i386/machine.c +++ b/target/i386/machine.c @@ -1483,6 +1483,48 @@ static const VMStateDescription vmstate_pdptrs = { } }; +static bool xfd_msrs_needed(void *opaque) +{ + X86CPU *cpu = opaque; + CPUX86State *env = &cpu->env; + + return !!(env->features[FEAT_XSAVE] & CPUID_D_1_EAX_XFD); +} + +static const VMStateDescription vmstate_msr_xfd = { + .name = "cpu/msr_xfd", + .version_id = 1, + .minimum_version_id = 1, + .needed = xfd_msrs_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT64(env.msr_xfd, X86CPU), + VMSTATE_UINT64(env.msr_xfd_err, X86CPU), + VMSTATE_END_OF_LIST() + } +}; + +#ifdef TARGET_X86_64 +static bool amx_xtile_needed(void *opaque) +{ + X86CPU *cpu = opaque; + CPUX86State *env = &cpu->env; + + return !!(env->features[FEAT_7_0_EDX] & CPUID_7_0_EDX_AMX_TILE); +} + +static const VMStateDescription vmstate_amx_xtile = { + .name = "cpu/intel_amx_xtile", + .version_id = 1, + .minimum_version_id = 1, + .needed = amx_xtile_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT8_ARRAY(env.xtilecfg, X86CPU, 64), + VMSTATE_UINT8_ARRAY(env.xtiledata, X86CPU, 8192), + VMSTATE_END_OF_LIST() + } +}; +#endif + const VMStateDescription vmstate_x86_cpu = { .name = "cpu", .version_id = 12, @@ -1622,6 +1664,10 @@ const VMStateDescription vmstate_x86_cpu = { &vmstate_msr_tsx_ctrl, &vmstate_msr_intel_sgx, &vmstate_pdptrs, + &vmstate_msr_xfd, +#ifdef TARGET_X86_64 + &vmstate_amx_xtile, +#endif NULL } }; |