Subject: [PATCH 04/15] KVM: arm64: Fix writeable mask for ID_AA64PFR2_EL1

From: Marc Zyngier <[email-masked]>
Date: Thu, 26 Mar 2026 15:35:19 +0000

The writeable mask for fields in ID_AA64PFR2_EL1 has been accidentally
inverted, which isn't a very good idea.

Restore the expected polarity.

Fixes: a258a383b9177 ("KVM: arm64: gic-v5: Sanitize ID_AA64PFR2_EL1.GCIE")
Link: https://sashiko.dev/#/patchset/20260319154937.3619520-1-sascha.bischoff%40arm.com
Signed-off-by: Marc Zyngier <[email-masked]>
---
 arch/arm64/kvm/sys_regs.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 18e2d2fccedb8..6a96cb7ba9a3c 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -3304,10 +3304,10 @@ static const struct sys_reg_desc sys_reg_descs[] = {
 				       ID_AA64PFR1_EL1_MPAM_frac |
 				       ID_AA64PFR1_EL1_MTE)),
 	ID_FILTERED(ID_AA64PFR2_EL1, id_aa64pfr2_el1,
-		    ~(ID_AA64PFR2_EL1_FPMR |
-		      ID_AA64PFR2_EL1_MTEFAR |
-		      ID_AA64PFR2_EL1_MTESTOREONLY |
-		      ID_AA64PFR2_EL1_GCIE)),
+		    (ID_AA64PFR2_EL1_FPMR		|
+		     ID_AA64PFR2_EL1_MTEFAR		|
+		     ID_AA64PFR2_EL1_MTESTOREONLY	|
+		     ID_AA64PFR2_EL1_GCIE)),
 	ID_UNALLOCATED(4,3),
 	ID_WRITABLE(ID_AA64ZFR0_EL1, ~ID_AA64ZFR0_EL1_RES0),
 	ID_HIDDEN(ID_AA64SMFR0_EL1),
-- 
2.47.3