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(parent: 6880fa6) | patch
x86/asm: Add _ASM_RIP() macro for x86-64 (%rip) suffix
authorH. Peter Anvin (Intel) <hpa@zytor.com>
Fri, 10 Sep 2021 19:59:09 +0000 (12:59 -0700)
committerBorislav Petkov <bp@suse.de>
Mon, 13 Sep 2021 17:38:40 +0000 (19:38 +0200)
commitf87bc8dc7a7c438c70f97b4e51c76a183313272e
treed4346eb73fe88002b2c1f5c1e881b0cfee40b3eftree
parent6880fa6c56601bb8ed59df6c30fd390cc5f6dd8fcommit | diff
x86/asm: Add _ASM_RIP() macro for x86-64 (%rip) suffix

Add a macro _ASM_RIP() to add a (%rip) suffix on 64 bits only. This is
useful for immediate memory references where one doesn't want gcc
to possibly use a register indirection as it may in the case of an "m"
constraint.

Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210910195910.2542662-3-hpa@zytor.com
arch/x86/include/asm/asm.h diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)