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| author | Zenghui Yu <yuzenghui@huawei.com> | 2019-10-29 15:19:19 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-17 20:38:51 +0100 |
| commit | 69d2eb21297bffd1a2ba6807ac030b42f73dce1c (patch) | |
| tree | 1a9ff6ca9daf06f3bfbb72a810a99970c2806842 /arch | |
| parent | 48612e9cc0a0c8c676c59f6a3ae0d9b46f7ccee7 (diff) | |
KVM: arm/arm64: vgic: Don't rely on the wrong pending table
commit ca185b260951d3b55108c0b95e188682d8a507b7 upstream.
It's possible that two LPIs locate in the same "byte_offset" but target
two different vcpus, where their pending status are indicated by two
different pending tables. In such a scenario, using last_byte_offset
optimization will lead KVM relying on the wrong pending table entry.
Let us use last_ptr instead, which can be treated as a byte index into
a pending table and also, can be vcpu specific.
Fixes: 280771252c1b ("KVM: arm64: vgic-v3: KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES")
Cc: stable@vger.kernel.org
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20191029071919.177-4-yuzenghui@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions