The patch titled
Subject: lib/mpi/longlong.h: fix building with 32-bit x86
has been added to the -mm tree. Its filename is
lib-mpi-fix-building-with-32-bit-x86.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-mpi-fix-building-with-32-bit-x86.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-mpi-fix-building-with-32-bit-x86.patch
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: lib/mpi/longlong.h: fix building with 32-bit x86
The mpi library contains some rather old inline assembly statements that
produce a lot of warnings for 32-bit x86, such as:
lib/mpi/mpih-div.c:76:16: error: invalid use of a cast in a inline asm context requiring an l-value: remove the cast or build with -fheinous-gnu-extensions
udiv_qrnnd(qp[i], n1, n1, np[i], d);
~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
lib/mpi/longlong.h:423:20: note: expanded from macro 'udiv_qrnnd'
: "=a" ((USItype)(q)), \
~~~~~~~~~~^~
There is no point in doing a type cast for the output of an inline
assembler statement, so just remove the cast here, as we have done for
other architectures in the past.
See also dea632cadd12 ("lib/mpi: fix build with clang").
Link: http://lkml.kernel.org/r/20190712090740.340186-1-arnd@xxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Stefan Agner <stefan@xxxxxxxx>
Cc: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/mpi/longlong.h | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/lib/mpi/longlong.h~lib-mpi-fix-building-with-32-bit-x86
+++ a/lib/mpi/longlong.h
@@ -397,8 +397,8 @@ do { \
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("addl %5,%1\n" \
"adcl %3,%0" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "%0" ((USItype)(ah)), \
"g" ((USItype)(bh)), \
"%1" ((USItype)(al)), \
@@ -406,22 +406,22 @@ do { \
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("subl %5,%1\n" \
"sbbl %3,%0" \
- : "=r" ((USItype)(sh)), \
- "=&r" ((USItype)(sl)) \
+ : "=r" (sh), \
+ "=&r" (sl) \
: "0" ((USItype)(ah)), \
"g" ((USItype)(bh)), \
"1" ((USItype)(al)), \
"g" ((USItype)(bl)))
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("mull %3" \
- : "=a" ((USItype)(w0)), \
- "=d" ((USItype)(w1)) \
+ : "=a" (w0), \
+ "=d" (w1) \
: "%0" ((USItype)(u)), \
"rm" ((USItype)(v)))
#define udiv_qrnnd(q, r, n1, n0, d) \
__asm__ ("divl %4" \
- : "=a" ((USItype)(q)), \
- "=d" ((USItype)(r)) \
+ : "=a" (q), \
+ "=d" (r) \
: "0" ((USItype)(n0)), \
"1" ((USItype)(n1)), \
"rm" ((USItype)(d)))
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
thp-fix-unused-shmem_parse_huge-function-warning.patch
lib-mpi-fix-building-with-32-bit-x86.patch
mm-sparse-fix-memory-leak-of-sparsemap_buf-in-aliged-memory-fix.patch
waitqueue-fix-clang-wuninitialized-warnings.patch
lib-test_meminit-fix-wmaybe-uninitialized-false-positive.patch
coda-stop-using-struct-timespec-in-user-api.patch
proc-sysctl-add-shared-variables-for-range-check-fix-3.patch
