[PATCH v3 05/10] KVM: arm64: Add trap configs for PMSDSFR_EL1

James Clark
2025-06-05T11:04:11Z

SPE data source filtering (SPE_FEAT_FDS) adds a new register
PMSDSFR_EL1, add the trap configs for it. PMSNEVFR_EL1 was also missing
its VNCR offset so add it along with PMSDSFR_EL1.

Tested-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: James Clark <james.clark@linaro.org>
---
arch/arm64/include/asm/vncr_mapping.h | 2 ++
arch/arm64/kvm/emulate-nested.c | 1 +
arch/arm64/kvm/sys_regs.c | 1 +
3 files changed, 4 insertions(+)

diff --git a/arch/arm64/include/asm/vncr_mapping.h b/arch/arm64/include/asm/vncr_mapping.h
index 6f556e993644..dba0e58a5fac 100644
--- a/arch/arm64/include/asm/vncr_mapping.h
+++ b/arch/arm64/include/asm/vncr_mapping.h
@@ -92,6 +92,8 @@
#define VNCR_PMSICR_EL1 0x838
#define VNCR_PMSIRR_EL1 0x840
#define VNCR_PMSLATFR_EL1 0x848
+#define VNCR_PMSNEVFR_EL1 0x850
+#define VNCR_PMSDSFR_EL1 0x858
#define VNCR_TRFCR_EL1 0x880
#define VNCR_MPAM1_EL1 0x900
#define VNCR_MPAMHCR_EL2 0x930
diff --git a/arch/arm64/kvm/emulate-nested.c b/arch/arm64/kvm/emulate-nested.c
index 3a384e9660b8..60bd8b7f0e5b 100644
--- a/arch/arm64/kvm/emulate-nested.c
+++ b/arch/arm64/kvm/emulate-nested.c
@@ -1174,6 +1174,7 @@ static const struct encoding_to_trap_config encoding_to_cgt[] __initconst = {
SR_TRAP(SYS_PMSIRR_EL1, CGT_MDCR_TPMS),
SR_TRAP(SYS_PMSLATFR_EL1, CGT_MDCR_TPMS),
SR_TRAP(SYS_PMSNEVFR_EL1, CGT_MDCR_TPMS),
+ SR_TRAP(SYS_PMSDSFR_EL1, CGT_MDCR_TPMS),
SR_TRAP(SYS_TRFCR_EL1, CGT_MDCR_TTRF),
SR_TRAP(SYS_TRBBASER_EL1, CGT_MDCR_E2TB),
SR_TRAP(SYS_TRBLIMITR_EL1, CGT_MDCR_E2TB),
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index a6cf2888d150..4a88ba15c7df 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -3008,6 +3008,7 @@ static const struct sys_reg_desc sys_reg_descs[] = {
{ SYS_DESC(SYS_PMBLIMITR_EL1), undef_access },
{ SYS_DESC(SYS_PMBPTR_EL1), undef_access },
{ SYS_DESC(SYS_PMBSR_EL1), undef_access },
+ { SYS_DESC(SYS_PMSDSFR_EL1), undef_access },
/* PMBIDR_EL1 is not trapped */

{ PMU_SYS_REG(PMINTENSET_EL1),

--
2.34.1