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| author | Joerg Roedel <jroedel@suse.de> | 2020-09-07 16:16:10 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-09 12:33:20 +0300 |
| commit | 094794f59720d7e877a1eeb372ecedeed6b441ab (patch) | |
| tree | 90bf02f1584235a544dff87863dd9674398ba158 /arch/x86/include/uapi/asm/svm.h | |
| parent | 3ecacdbd23956a549d93023f86adc87b4a9d6520 (diff) | |
| download | linux-094794f59720d7e877a1eeb372ecedeed6b441ab.tar.xz | |
x86/sev-es: Support CPU offline/online
Add a play_dead handler when running under SEV-ES. This is needed
because the hypervisor can't deliver an SIPI request to restart the AP.
Instead, the kernel has to issue a VMGEXIT to halt the VCPU until the
hypervisor wakes it up again.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-70-joro@8bytes.org
Diffstat (limited to 'arch/x86/include/uapi/asm/svm.h')
| -rw-r--r-- | arch/x86/include/uapi/asm/svm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/svm.h b/arch/x86/include/uapi/asm/svm.h index 346b8a7155e8..c1dcf3e114e4 100644 --- a/arch/x86/include/uapi/asm/svm.h +++ b/arch/x86/include/uapi/asm/svm.h @@ -84,6 +84,7 @@ /* SEV-ES software-defined VMGEXIT events */ #define SVM_VMGEXIT_MMIO_READ 0x80000001 #define SVM_VMGEXIT_MMIO_WRITE 0x80000002 +#define SVM_VMGEXIT_AP_HLT_LOOP 0x80000004 #define SVM_VMGEXIT_AP_JUMP_TABLE 0x80000005 #define SVM_VMGEXIT_SET_AP_JUMP_TABLE 0 #define SVM_VMGEXIT_GET_AP_JUMP_TABLE 1 |