Fix S390 build error
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Justin M. Forbes
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c2b56eada2
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c856345649
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@ -578,6 +578,7 @@ Patch524: net-vhost_net-fix-possible-infinite-loop.patch
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# build fix
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Patch525: 0001-arm64-vdso-Explicitly-add-build-id-option.patch
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Patch526: s390-mark-__cpacf_check_opcode-and-cpacf_query_func-as-__always_inline.patch
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# END OF PATCH DEFINITIONS
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@ -0,0 +1,105 @@
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From patchwork Fri May 17 06:54:24 2019
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X-Patchwork-Submitter: Masahiro Yamada <yamada.masahiro@socionext.com>
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X-Patchwork-Id: 1075092
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From: Masahiro Yamada <yamada.masahiro@socionext.com>
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To: Martin Schwidefsky <schwidefsky@de.ibm.com>,
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Heiko Carstens <heiko.carstens@de.ibm.com>,
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linux-s390@vger.kernel.org
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Cc: Arnd Bergmann <arnd@arndb.de>, Laura Abbott <labbott@redhat.com>,
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Masahiro Yamada <yamada.masahiro@socionext.com>,
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linux-kernel@vger.kernel.org,
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Andrew Morton <akpm@linux-foundation.org>
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Subject: [PATCH] s390: mark __cpacf_check_opcode() and cpacf_query_func() as
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__always_inline
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Date: Fri, 17 May 2019 15:54:24 +0900
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Commit e60fb8bf68d4 ("s390/cpacf: mark scpacf_query() as __always_inline")
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was not enough to make sure to meet the 'i' (immediate) constraint for the
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asm operands.
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With CONFIG_OPTIMIZE_INLINING enabled, Laura Abbott reported error
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with gcc 9.1.1:
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In file included from arch/s390/crypto/prng.c:29:
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./arch/s390/include/asm/cpacf.h: In function 'cpacf_query_func':
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./arch/s390/include/asm/cpacf.h:170:2: warning: asm operand 3 probably doesn't match constraints
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170 | asm volatile(
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| ^~~
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./arch/s390/include/asm/cpacf.h:170:2: error: impossible constraint in 'asm'
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Add more __always_inline to force inlining.
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Fixes: 9012d011660e ("compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING")
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Reported-by: Laura Abbott <labbott@redhat.com>
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Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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---
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arch/s390/include/asm/cpacf.h | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h
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index f316de40e51b..19459dfb4295 100644
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--- a/arch/s390/include/asm/cpacf.h
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+++ b/arch/s390/include/asm/cpacf.h
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@@ -177,7 +177,7 @@ static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
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: "cc");
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}
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-static inline int __cpacf_check_opcode(unsigned int opcode)
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+static __always_inline int __cpacf_check_opcode(unsigned int opcode)
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{
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switch (opcode) {
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case CPACF_KMAC:
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@@ -217,7 +217,7 @@ static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
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return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
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}
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-static inline int cpacf_query_func(unsigned int opcode, unsigned int func)
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+static __always_inline int cpacf_query_func(unsigned int opcode, unsigned int func)
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{
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cpacf_mask_t mask;
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