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| author | Ben Horgan <ben.horgan@arm.com> | 2026-03-13 17:45:42 +0300 |
|---|---|---|
| committer | James Morse <james.morse@arm.com> | 2026-03-27 18:27:47 +0300 |
| commit | 2e7c684bdb50cfaf98da80ebaab4a961fdcd1aa2 (patch) | |
| tree | 412259e5f391ba6f5efadabf8c78736f4ae995fe | |
| parent | eda1cd1f9d29b382a07d757cf8b29f9ee636355f (diff) | |
| download | linux-2e7c684bdb50cfaf98da80ebaab4a961fdcd1aa2.tar.xz | |
KVM: arm64: Make MPAMSM_EL1 accesses UNDEF
The MPAMSM_EL1 register controls the MPAM labeling for an SMCU, Streaming
Mode Compute Unit. As there is no MPAM support in KVM, make sure MPAMSM_EL1
accesses trigger an UNDEF.
Tested-by: Gavin Shan <gshan@redhat.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Tested-by: Zeng Heng <zengheng4@huawei.com>
Tested-by: Punit Agrawal <punit.agrawal@oss.qualcomm.com>
Tested-by: Jesse Chick <jessechick@os.amperecomputing.com>
Reviewed-by: Zeng Heng <zengheng4@huawei.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 1b4cacb6e918..0edd655934a9 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -3376,6 +3376,8 @@ static const struct sys_reg_desc sys_reg_descs[] = { { SYS_DESC(SYS_MPAM1_EL1), undef_access }, { SYS_DESC(SYS_MPAM0_EL1), undef_access }, + { SYS_DESC(SYS_MPAMSM_EL1), undef_access }, + { SYS_DESC(SYS_VBAR_EL1), access_rw, reset_val, VBAR_EL1, 0 }, { SYS_DESC(SYS_DISR_EL1), NULL, reset_val, DISR_EL1, 0 }, |