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| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-11-11 15:40:26 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-11-11 15:40:26 +0300 |
| commit | b9ecb9a997333f90236cb6f3d52d83987a17addc (patch) | |
| tree | 9d4c34b26ba67337923c8681daf32d1b162426c8 /arch/x86/include/asm/paravirt.h | |
| parent | debe436e77c72fcee804fb867f275e6d31aa999c (diff) | |
| parent | 73f1b4fece216c2e72be74c4d0d0f71a0b944bec (diff) | |
| download | linux-b9ecb9a997333f90236cb6f3d52d83987a17addc.tar.xz | |
Merge branch 'kvm-guest-sev-migration' into kvm-master
Add guest api and guest kernel support for SEV live migration.
Introduces a new hypercall to notify the host of changes to the page
encryption status. If the page is encrypted then it must be migrated
through the SEV firmware or a helper VM sharing the key. If page is
not encrypted then it can be migrated normally by userspace. This new
hypercall is invoked using paravirt_ops.
Conflicts: sev_active() replaced by cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT).
Diffstat (limited to 'arch/x86/include/asm/paravirt.h')
| -rw-r--r-- | arch/x86/include/asm/paravirt.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index cebec95a7124..21c4a694ca11 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -97,6 +97,12 @@ static inline void paravirt_arch_exit_mmap(struct mm_struct *mm) PVOP_VCALL1(mmu.exit_mmap, mm); } +static inline void notify_page_enc_status_changed(unsigned long pfn, + int npages, bool enc) +{ + PVOP_VCALL3(mmu.notify_page_enc_status_changed, pfn, npages, enc); +} + #ifdef CONFIG_PARAVIRT_XXL static inline void load_sp0(unsigned long sp0) { |