diff options
author | Eduardo Habkost <ehabkost@redhat.com> | 2008-11-17 16:03:22 -0500 |
---|---|---|
committer | Avi Kivity <avi@redhat.com> | 2008-12-31 09:52:30 -0500 |
commit | 0f3e9eeba0ea212bbea88790729d054b700ab91e (patch) | |
tree | 1882e6c45d57bc58404fcd4b1fe1651569441130 /arch | |
parent | 2c8dceebb238680d5577500f8283397d41ca5590 (diff) |
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')
-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) | |||
121 | wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); | 121 | wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); |
122 | } | 122 | } |
123 | 123 | ||
124 | /** Makes sure SVM is disabled, if it is supported on the CPU | ||
125 | */ | ||
126 | static inline void cpu_emergency_svm_disable(void) | ||
127 | { | ||
128 | if (cpu_has_svm(NULL)) | ||
129 | cpu_svm_disable(); | ||
130 | } | ||
131 | |||
124 | #endif /* _ASM_X86_VIRTEX_H */ | 132 | #endif /* _ASM_X86_VIRTEX_H */ |