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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-03-09 08:54:19 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-03-09 08:54:19 +0000 |
| commit | 52699620965db5bd229788223427d4559644b36e (patch) | |
| tree | f15361eef5a4b94b3b1bd4e3d74085687bc62ae7 /tools/libxc/xc_cpufeature.h | |
| parent | 6db42837ce7ac8c7028dc8416a11442775af3c45 (diff) | |
| download | xen-52699620965db5bd229788223427d4559644b36e.tar.gz xen-52699620965db5bd229788223427d4559644b36e.tar.bz2 xen-52699620965db5bd229788223427d4559644b36e.zip | |
x86: Mask X86_FEATURE_XSAVE in cpuid leaf 1, ecx, as we don't allow
guests to use it (by setting cr4.OSXSAVE).
This prevents crashes in pvops kernels, as new versions of Linux
try to use this feature.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Diffstat (limited to 'tools/libxc/xc_cpufeature.h')
| -rw-r--r-- | tools/libxc/xc_cpufeature.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/libxc/xc_cpufeature.h b/tools/libxc/xc_cpufeature.h index 047a6c9fc7..b5ab901c68 100644 --- a/tools/libxc/xc_cpufeature.h +++ b/tools/libxc/xc_cpufeature.h @@ -83,6 +83,7 @@ #define X86_FEATURE_SSE4_1 (4*32+19) /* Streaming SIMD Extensions 4.1 */ #define X86_FEATURE_SSE4_2 (4*32+20) /* Streaming SIMD Extensions 4.2 */ #define X86_FEATURE_POPCNT (4*32+23) /* POPCNT instruction */ +#define X86_FEATURE_XSAVE (4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */ #define X86_FEATURE_HYPERVISOR (4*32+31) /* Running under some hypervisor */ /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */ |