From: Samuel Thibault <samuel.thibault@ens-lyon.org>
To: linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org
Subject: __cmpxchg_u64 and llsc/LLSC_WAR
Date: Fri, 14 Apr 2006 10:28:09 +0200 [thread overview]
Message-ID: <20060414082809.GA4283@implementation.labri.fr> (raw)
Hi,
In linux/include/asm-mips/system.h:__cmpxchg_u64(), one can read
if (cpu_has_llsc) {
asm(stuff with beqzl);
} else if (cpu_has_llsc) {
asm(stuff with beqz);
} else {
C code;
}
There's no test for "LLSC_WAR", is that on purpose? (i.e.. is beqzl
always needed rather than beqz?)
Regards,
Samuel
reply other threads:[~2006-04-14 8:27 UTC|newest]
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