From: Mark Brown <broonie@xxxxxxxxxx> In preparation for adding more visibility filtering for EL2 registers add a helper macro like EL2_REG() which allows specification of a custom visibility operation. Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Link: https://lore.kernel.org/r/20240822-kvm-arm64-hide-pie-regs-v2-1-376624fa829c@xxxxxxxxxx Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx> --- arch/arm64/kvm/sys_regs.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index ffffcbaf80da4..41063079ed941 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2151,6 +2151,15 @@ static bool bad_redir_trap(struct kvm_vcpu *vcpu, .val = v, \ } +#define EL2_REG_FILTERED(name, acc, rst, v, filter) { \ + SYS_DESC(SYS_##name), \ + .access = acc, \ + .reset = rst, \ + .reg = name, \ + .visibility = filter, \ + .val = v, \ +} + #define EL2_REG_VNCR(name, rst, v) EL2_REG(name, bad_vncr_trap, rst, v) #define EL2_REG_REDIR(name, rst, v) EL2_REG(name, bad_redir_trap, rst, v) @@ -2818,8 +2827,8 @@ static const struct sys_reg_desc sys_reg_descs[] = { EL2_REG_VNCR(HFGITR_EL2, reset_val, 0), EL2_REG_VNCR(HACR_EL2, reset_val, 0), - { SYS_DESC(SYS_ZCR_EL2), .access = access_zcr_el2, .reset = reset_val, - .visibility = sve_el2_visibility, .reg = ZCR_EL2 }, + EL2_REG_FILTERED(ZCR_EL2, access_zcr_el2, reset_val, 0, + sve_el2_visibility), EL2_REG_VNCR(HCRX_EL2, reset_val, 0), -- 2.39.2
