diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2021-11-11 07:40:26 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-11-11 07:40:26 -0500 |
| commit | b9ecb9a997333f90236cb6f3d52d83987a17addc (patch) | |
| tree | 9d4c34b26ba67337923c8681daf32d1b162426c8 /arch/x86/mm/pat | |
| parent | debe436e77c72fcee804fb867f275e6d31aa999c (diff) | |
| parent | 73f1b4fece216c2e72be74c4d0d0f71a0b944bec (diff) | |
| download | linux-b9ecb9a997333f90236cb6f3d52d83987a17addc.tar.bz2 | |
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/mm/pat')
| -rw-r--r-- | arch/x86/mm/pat/set_memory.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 934dc5b2df36..b4072115c8ef 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -2023,6 +2023,12 @@ static int __set_memory_enc_pgtable(unsigned long addr, int numpages, bool enc) */ cpa_flush(&cpa, 0); + /* + * Notify hypervisor that a given memory range is mapped encrypted + * or decrypted. + */ + notify_range_enc_status_changed(addr, numpages, enc); + return ret; } |