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| author | Quentin Perret <[email protected]> | 2022-10-25 14:51:56 +0000 |
|---|---|---|
| committer | Marc Zyngier <[email protected]> | 2022-10-25 15:29:58 +0000 |
| commit | 6853a71726b6f5930b4450889faf02e8f1cfe35c (patch) | |
| tree | d21f598dfa01bf1c18572e81dded4adac61b5af2 /arch/arm64/kvm/hyp/exception.c | |
| parent | Linux 6.1-rc2 (diff) | |
| download | kernel-6853a71726b6f5930b4450889faf02e8f1cfe35c.tar.gz kernel-6853a71726b6f5930b4450889faf02e8f1cfe35c.zip | |
KVM: arm64: Use correct accessor to parse stage-1 PTEs
hyp_get_page_state() is used with pKVM to retrieve metadata about a page
by parsing a hypervisor stage-1 PTE. However, it incorrectly uses a
helper which parses *stage-2* mappings. Ouch.
Luckily, pkvm_getstate() only looks at the software bits, which happen
to be in the same place for stage-1 and stage-2 PTEs, and this all ends
up working correctly by accident. But clearly, we should do better.
Fix hyp_get_page_state() to use the correct helper.
Fixes: e82edcc75c4e ("KVM: arm64: Implement do_share() helper for sharing memory")
Signed-off-by: Quentin Perret <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'arch/arm64/kvm/hyp/exception.c')
0 files changed, 0 insertions, 0 deletions