[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ (part1)
Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> writes: > ARMv6 and greater introduced a new instruction ("bx") which can be used > to return from function calls. Recent CPUs perform better when the > "bx lr" instruction is used rather than the "mov pc, lr" instruction, > and this sequence is strongly recommended to be used by the ARM > architecture manual (section A.4.1.1). For ARMv5 - XScale, and more specificaly the mioa701_bootresume.S path (suspend to RAM) : Tested-by: Robert Jarzmik <robert.jarzmik@xxxxxxx> Cheers. -- Robert _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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