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17 May 2024, 11:00:25 UTC
Revision d814c28ceca8f659c0012eaec8e21eee43710716 authored by David Daney on 19 February 2010, 00:13:05 UTC, committed by Ralf Baechle on 12 April 2010, 16:26:15 UTC 
MIPS: Move signal trampolines off of the stack.
 
This is a follow on to the vdso patch.

Since all processes now have signal trampolines permanently mapped, we
can use those instead of putting the trampoline on the stack and
invalidating the corresponding icache across all CPUs.  We also get rid
of a bunch of ICACHE_REFILLS_WORKAROUND_WAR code.

[Ralf: GDB 7.1 which has the necessary modifications to allow backtracing
over signal frames will supposedly be released tomorrow.  The old signal
frame format obsoleted by this patch exists in two variations, for sane
processors and for those requiring ICACHE_REFILLS_WORKAROUND_WAR.  So
there was never a GDB which did support backtracing over signal frames
on all MIPS systems.  This convinved me this series should be applied and
pushed upstream as soon as possible.]

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/974/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
1 parent c52d0d3
History
Tip revision: d814c28ceca8f659c0012eaec8e21eee43710716 authored by David Daney on 19 February 2010, 00:13:05 UTC
MIPS: Move signal trampolines off of the stack.
Tip revision: d814c28
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