The patch titled
Subject: thp, s390: add missing earlyclobber to inline assembly
has been added to the -mm tree. Its filename is
thp-s390-architecture-backend-for-thp-on-s390-fix.patch
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------------------------------------------------------
From: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>
Subject: thp, s390: add missing earlyclobber to inline assembly
The constraints of the rrbm inline assembly are missing two
earlyclobber operands, which can lead to an addressing exception
depending on compiler register allocation decisions.
Signed-off-by: Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/s390/include/asm/pgtable.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN arch/s390/include/asm/pgtable.h~thp-s390-architecture-backend-for-thp-on-s390-fix arch/s390/include/asm/pgtable.h
--- a/arch/s390/include/asm/pgtable.h~thp-s390-architecture-backend-for-thp-on-s390-fix
+++ a/arch/s390/include/asm/pgtable.h
@@ -1296,7 +1296,8 @@ static inline int pmdp_test_and_clear_yo
" ogr %1,%0\n"
" la %3,0(%4,%3)\n"
" brct %2,0b\n"
- : "=d" (tmp), "+d" (rc), "+d" (counter), "+a" (pmd_addr)
+ : "=&d" (tmp), "+&d" (rc), "+d" (counter),
+ "+a" (pmd_addr)
: "a" (64 * 4096UL) : "cc");
rc = !!rc;
} else {
_
Patches currently in -mm which might be from gerald.schaefer@xxxxxxxxxx are
linux-next.patch
thp-x86-introduce-have_arch_transparent_hugepage.patch
thp-remove-assumptions-on-pgtable_t-type.patch
thp-introduce-pmdp_invalidate.patch
thp-make-madv_hugepage-check-for-mm-def_flags.patch
thp-s390-thp-splitting-backend-for-s390.patch
thp-s390-thp-pagetable-pre-allocation-for-s390.patch
thp-s390-disable-thp-for-kvm-host-on-s390.patch
thp-s390-architecture-backend-for-thp-on-s390.patch
thp-s390-architecture-backend-for-thp-on-s390-fix.patch
mm-thp-fix-the-pmd_clear-arguments-in-pmdp_get_and_clear.patch
mm-thp-fix-the-update_mmu_cache-last-argument-passing-in-mm-huge_memoryc.patch
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