[PATCH v2 1/6] sparc64: return from the generic clear_page implementation
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COOLING8d
SUPERSEDED
From: Magnus Lindholm <linmag7@gmail.com>
Date: 2026-10-11 19:57:49
Also in:
linux-serial, lkml, sparclinux, stable
Subsystem:
sparc + ultrasparc (sparc/sparc64), the rest · Maintainers:
"David S. Miller", Andreas Larsson, Linus Torvalds
Revision v2 of 4 in this series.
Revisions (4)
- v1 [diff vs current]
- v2 current
- v3 [diff vs current]
- v4 [diff vs current]
GENclear_page falls through into generic_patch_pageops after clearing
its page. The patcher then rewrites kernel text on each invocation.
Return to the caller once the clear loop completes, as GENcopy_page does.
This affects processors using the generic page-operation fallback.
Fixes: 6c70b6fc7b6f ("[SPARC64]: Do not assume sun4v chips have load-twin/store-init support.")
Cc: stable@vger.kernel.org
Signed-off-by: Magnus Lindholm <linmag7@gmail.com>
---
arch/sparc/lib/GENpage.S | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/sparc/lib/GENpage.S b/arch/sparc/lib/GENpage.S
index c143c4d1de3f..6ce11108e143 100644
--- a/arch/sparc/lib/GENpage.S
+++ b/arch/sparc/lib/GENpage.S@@ -48,6 +48,9 @@ GENclear_user_page: bne,pt %xcc, 1b add %o0, 64, %o0 + retl + nop + #define BRANCH_ALWAYS 0x10680000 #define NOP 0x01000000 #define GEN_DO_PATCH(OLD, NEW) \
--
2.43.0