Re: [Xen-devel] [PATCH] ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ (part1)

[Robert Jarzmik <robert.jarzmik@xxxxxxx>]

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

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