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| author | Eduardo Habkost <ehabkost@redhat.com> | 2008-11-17 19:03:22 -0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-12-31 16:52:30 +0200 |
| commit | 0f3e9eeba0ea212bbea88790729d054b700ab91e (patch) | |
| tree | 1882e6c45d57bc58404fcd4b1fe1651569441130 /arch/x86/include/asm/virtext.h | |
| parent | 2c8dceebb238680d5577500f8283397d41ca5590 (diff) | |
| download | blackbird-obmc-linux-0f3e9eeba0ea212bbea88790729d054b700ab91e.tar.gz blackbird-obmc-linux-0f3e9eeba0ea212bbea88790729d054b700ab91e.zip | |
x86: cpu_emergency_svm_disable() function
This function can be used by the reboot or kdump code to forcibly
disable SVM on the CPU.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/virtext.h')
| -rw-r--r-- | arch/x86/include/asm/virtext.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/include/asm/virtext.h b/arch/x86/include/asm/virtext.h index 2cfe363729c3..593636275238 100644 --- a/arch/x86/include/asm/virtext.h +++ b/arch/x86/include/asm/virtext.h @@ -121,4 +121,12 @@ static inline void cpu_svm_disable(void) wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); } +/** Makes sure SVM is disabled, if it is supported on the CPU + */ +static inline void cpu_emergency_svm_disable(void) +{ + if (cpu_has_svm(NULL)) + cpu_svm_disable(); +} + #endif /* _ASM_X86_VIRTEX_H */ |
