diff options
authorVladimir Murzin <vladimir.murzin@arm.com>2019-02-20 14:00:13 (GMT)
committerRussell King <rmk+kernel@armlinux.org.uk>2019-02-26 11:33:48 (GMT)
commit9db043d36bd379f4cc99054c079de0dabfc38d03 (patch)
parentb7e8c9397cd4efe6567d2728f091f1b728025533 (diff)
ARM: 8848/1: virt: Align GIC version check with arm64 counterpart
arm64 has got relaxation on GIC version check at early boot stage due to update of the GIC architecture let's align ARM with that. To help backports (even though the code was correct at the time of writing) Fixes: e59941b9b381 ("ARM: 8527/1: virt: enable GICv3 system registers") Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S
index 60146e3..82a9428 100644
--- a/arch/arm/kernel/hyp-stub.S
+++ b/arch/arm/kernel/hyp-stub.S
@@ -180,8 +180,8 @@ ARM_BE8(orr r7, r7, #(1 << 25)) @ HSCTLR.EE
@ Check whether GICv3 system registers are available
mrc p15, 0, r7, c0, c1, 1 @ ID_PFR1
ubfx r7, r7, #28, #4
- cmp r7, #1
- bne 2f
+ teq r7, #0
+ beq 2f
@ Enable system register accesses
mrc p15, 4, r7, c12, c9, 5 @ ICC_HSRE

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