KVM: arm64: Correctly handle ACCDATA_EL1 traps

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As we blindly reset some HFGxTR_EL2 bits to 0, we also randomly trap
unsuspecting sysregs that have their trap bits with a negative
polarity.

ACCDATA_EL1 is one such register that can be accessed by the guest,
causing a splat on the host as we don't have a proper handler for
it.

Adding such handler addresses the issue, though there are a number
of other registers missing as the current architecture documentation
doesn't describe them yet.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Miguel Luis <miguel.luis@oracle.com>
Reviewed-by: Jing Zhang <jingzhangos@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230815183903.2735724-11-maz@kernel.org

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Marc Zyngier 2023-08-15 19:38:44 +01:00

parent b206a708cb

commit 484f86824a

2 changed files with 4 additions and 0 deletions

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arch/arm64/include/asm/sysreg.h

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2

arch/arm64/kvm/sys_regs.c

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