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    Subject[PATCH v7 04/12] KVM: arm64: PMU: Don't define the sysreg reset() for PM{USERENR,CCFILTR}_EL0
    From
    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 3dbb7d276b0e..08af7824e9d8 100644
    --- a/arch/arm64/kvm/sys_regs.c
    +++ b/arch/arm64/kvm/sys_regs.c
    @@ -2180,7 +2180,7 @@ 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 },

    @@ -2338,7 +2338,7 @@ 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),
    --
    2.42.0.609.gbb76f46606-goog
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