| commit | 917248144db5d7320655dbb41d3af0b8a0f3d589 | [log] [tgz] |
|---|---|---|
| author | Boris Ostrovsky <boris.ostrovsky@oracle.com> | Thu Dec 05 01:30:51 2019 +0000 |
| committer | Paolo Bonzini <pbonzini@redhat.com> | Thu Jan 30 18:45:55 2020 +0100 |
| tree | 4c865f9aeb61137847ce9d283bc33febded17714 | |
| parent | 1eff70a9abd46f175defafd29bc17ad456f398a7 [diff] |
x86/kvm: Cache gfn to pfn translation __kvm_map_gfn()'s call to gfn_to_pfn_memslot() is * relatively expensive * in certain cases (such as when done from atomic context) cannot be called Stashing gfn-to-pfn mapping should help with both cases. This is part of CVE-2019-3016. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Reviewed-by: Joao Martins <joao.m.martins@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>