Messages in this thread Patch in this message | | | Date | Thu, 17 Aug 2023 00:30:21 +0000 | Subject | [PATCH v5 04/12] KVM: arm64: PMU: Don't define the sysreg reset() for PM{USERENR,CCFILTR}_EL0 | From | Raghavendra Rao Ananta <> |
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From: Reiji Watanabe <reijiw@google.com>
The default reset function for PMU registers (defined by PMU_SYS_REG) now simply clears a specified register. Use the default one for PMUSERENR_EL0 and PMCCFILTR_EL0, as KVM currently clears those registers on vCPU reset (NOTE: All non-RES0 fields of those registers have UNKNOWN reset values, and the same fields of their AArch32 registers have 0 reset values).
No functional change intended.
Signed-off-by: Reiji Watanabe <reijiw@google.com> Signed-off-by: Raghavendra Rao Ananta <rananta@google.com> --- arch/arm64/kvm/sys_regs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 9d3d44d165eed..39e9248c935e7 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2178,7 +2178,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { * in 32bit mode. Here we choose to reset it as zero for consistency. */ { PMU_SYS_REG(PMUSERENR_EL0), .access = access_pmuserenr, - .reset = reset_val, .reg = PMUSERENR_EL0, .val = 0 }, + .reg = PMUSERENR_EL0, }, { PMU_SYS_REG(PMOVSSET_EL0), .access = access_pmovs, .reg = PMOVSSET_EL0 }, @@ -2336,7 +2336,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { * in 32bit mode. Here we choose to reset it as zero for consistency. */ { PMU_SYS_REG(PMCCFILTR_EL0), .access = access_pmu_evtyper, - .reset = reset_val, .reg = PMCCFILTR_EL0, .val = 0 }, + .reg = PMCCFILTR_EL0, }, EL2_REG(VPIDR_EL2, access_rw, reset_unknown, 0), EL2_REG(VMPIDR_EL2, access_rw, reset_unknown, 0), -- 2.41.0.694.ge786442a9b-goog
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