diff mbox series

[5.10,23/23] arm64: kvm: Fix copy-and-paste error in bhb templates for v5.10 stable

Message ID 20220317124526.627536148@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH March 17, 2022, 12:46 p.m. UTC 
From: James Morse <james.morse@arm.com>

KVM's infrastructure for spectre mitigations in the vectors in v5.10 and
earlier is different, it uses templates which are used to build a set of
vectors at runtime.

There are two copy-and-paste errors in the templates: __spectre_bhb_loop_k24
should loop 24 times and __spectre_bhb_loop_k32 32.

Fix these.

Reported-by: Pavel Machek <pavel@denx.de>
Link: https://lore.kernel.org/all/20220310234858.GB16308@amd/
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/kvm/hyp/smccc_wa.S |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

--- a/arch/arm64/kvm/hyp/smccc_wa.S
+++ b/arch/arm64/kvm/hyp/smccc_wa.S
@@ -68,7 +68,7 @@  SYM_DATA_START(__spectre_bhb_loop_k24)
 	esb
 	sub	sp, sp, #(8 * 2)
 	stp	x0, x1, [sp, #(8 * 0)]
-	mov	x0, #8
+	mov	x0, #24
 2:	b	. + 4
 	subs	x0, x0, #1
 	b.ne	2b
@@ -85,7 +85,7 @@  SYM_DATA_START(__spectre_bhb_loop_k32)
 	esb
 	sub	sp, sp, #(8 * 2)
 	stp	x0, x1, [sp, #(8 * 0)]
-	mov	x0, #8
+	mov	x0, #32
 2:	b	. + 4
 	subs	x0, x0, #1
 	b.ne	2b