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| author | Marc Zyngier <[email protected]> | 2025-04-22 12:26:10 +0000 |
|---|---|---|
| committer | Marc Zyngier <[email protected]> | 2025-05-14 09:43:50 +0000 |
| commit | 493b01de726d02e835c510d01df6880fa28d41b7 (patch) | |
| tree | 95552a704e946b57bf45deacaaaf1c7a16c1ad13 /rust/helpers/helpers.c | |
| parent | Linux 6.15-rc3 (diff) | |
| download | kernel-493b01de726d02e835c510d01df6880fa28d41b7.tar.gz kernel-493b01de726d02e835c510d01df6880fa28d41b7.zip | |
KVM: arm64: Fix PAR_EL1.{PTW,S} reporting on AT S1E*
When an AT S1E* operation fails, we need to report whether the
translation failed at S2, and whether this was during a S1 PTW.
But these two bits are not independent. PAR_EL1.PTW can only be
set of PAR_EL1.S is also set, and PAR_EL1.S can only be set on
its own when the full S1 PTW has succeeded, but that the access
itself is reporting a fault at S2.
As a result, it makes no sense to carry both ptw and s2 as parameters
to fail_s1_walk(), and they should be unified.
This fixes a number of cases where we were reporting PTW=1 *and*
S=0, which makes no sense.
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Marc Zyngier <[email protected]>
Diffstat (limited to 'rust/helpers/helpers.c')
0 files changed, 0 insertions, 0 deletions