diff options
| author | Marios Pomonis <pomonis@google.com> | 2019-12-11 12:47:53 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-14 16:30:00 -0500 |
| commit | c3ccf2fdfc89871042659ae1463fd1d9665fdfef (patch) | |
| tree | 43359dc630a593f02b03e4fad8fa78a0602a68c5 /kernel | |
| parent | 784258aaf66a4018dc277ecfa9f82e551e5abc49 (diff) | |
KVM: x86: Protect pmu_intel.c from Spectre-v1/L1TF attacks
[ Upstream commit 66061740f1a487f4ed54fde75e724709f805da53 ]
This fixes Spectre-v1/L1TF vulnerabilities in intel_find_fixed_event()
and intel_rdpmc_ecx_to_pmc().
kvm_rdpmc() (ancestor of intel_find_fixed_event()) and
reprogram_fixed_counter() (ancestor of intel_rdpmc_ecx_to_pmc()) are
exported symbols so KVM should treat them conservatively from a security
perspective.
Fixes: 25462f7f5295 ("KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch")
Signed-off-by: Nick Finco <nifi@google.com>
Signed-off-by: Marios Pomonis <pomonis@google.com>
Reviewed-by: Andrew Honig <ahonig@google.com>
Cc: stable@vger.kernel.org
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions