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| author | Oliver Upton <oliver.upton@linux.dev> | 2024-08-22 07:17:09 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-08-22 07:41:00 +0000 |
| commit | 1d8c3c23a6bc1527e253b305b4b68c03d833b824 (patch) | |
| tree | 1de599ebf4723b0f3236ec1815ba05a102e09d8e /drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | |
| parent | f616506754d34bcfdbfbc7508b562e5c98461e9a (diff) | |
KVM: arm64: Ensure canonical IPA is hugepage-aligned when handling fault
Zenghui reports that VMs backed by hugetlb pages are no longer booting
after commit fd276e71d1e7 ("KVM: arm64: nv: Handle shadow stage 2 page
faults").
Support for shadow stage-2 MMUs introduced the concept of a fault IPA
and canonical IPA to stage-2 fault handling. These are identical in the
non-nested case, as the hardware stage-2 context is always that of the
canonical IPA space.
Both addresses need to be hugepage-aligned when preparing to install a
hugepage mapping to ensure that KVM uses the correct GFN->PFN translation
and installs that at the correct IPA for the current stage-2.
And now I'm feeling thirsty after all this talk of IPAs...
Fixes: fd276e71d1e7 ("KVM: arm64: nv: Handle shadow stage 2 page faults")
Reported-by: Zenghui Yu <yuzenghui@huawei.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240822071710.2291690-1-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c')
0 files changed, 0 insertions, 0 deletions