All valid fields in ID_DFR0_EL1 are writable from usrespace with this change. Signed-off-by: Jing Zhang <jingzhangos@xxxxxxxxxx> --- arch/arm64/kvm/sys_regs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index a6299c796d03..3964a85a89fe 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2017,7 +2017,7 @@ static const struct sys_reg_desc sys_reg_descs[] = { .set_user = set_id_dfr0_el1, .visibility = aa32_id_visibility, .reset = read_sanitised_id_dfr0_el1, - .val = ID_DFR0_EL1_PerfMon_MASK, }, + .val = GENMASK(63, 0), }, ID_HIDDEN(ID_AFR0_EL1), AA32_ID_SANITISED(ID_MMFR0_EL1), AA32_ID_SANITISED(ID_MMFR1_EL1), -- 2.41.0.rc0.172.g3f132b7071-goog