Re: [PATCH v2 1/6] KVM: arm64: Correctly treat writes to OSLSR_EL1 as undefined
From: Reiji Watanabe <hidden>
Date: 2021-11-04 02:42:10
Also in:
kvm, kvmarm
On Tue, Nov 2, 2021 at 2:47 AM Oliver Upton [off-list ref] wrote:
Any valid implementation of the architecture should generate an undefined exception for writes to a read-only register, such as OSLSR_EL1. Nonetheless, the KVM handler actually implements write-ignore behavior. Align the trap handler for OSLSR_EL1 with hardware behavior. If such a write ever traps to EL2, inject an undef into the guest and print a warning. Signed-off-by: Oliver Upton <redacted>
Reviewed-by: Reiji Watanabe <redacted> Thanks, Reiji _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel