ARM: thumb: Fix thumb mode compilation problems.
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Cover letter [PATCH 0/1] ARM: thumb: Fix thumb mode compilation problems.
Quoted 4 lines · Vadim Bendebury
This patch won't necessarily apply as it has not been verified on a real hardware, so this is more of an RFC.
Quoted 15 lines
Vadim Bendebury (1):
ARM: thumb: Fix thumb mode compilation problems.arch/arm/kernel/fiq.c | 34 ++++++++++++++++++++++++++-------- arch/arm/mach-tegra/headsmp.S | 3 ++- 2 files changed, 28 insertions(+), 9 deletions(-)Signature · 7 lines
1.7.3.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel at lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
A different patch for this has already been discussed:
http://thread.gmane.org/gmane.linux.ports.arm.kernel/112864
It's a bit stalled on my side because I don't have a suitable platform to test it on. As some have suggested, in my case (imx51) the inclusion of code was inherited from from an older subarch tree and is no longer appropriate -- so my problem is actually solved just by not building this code.
If the code is really used in your kernel (not just built) it would be really useful if you could test this patch.
However you should definitely check whether the code is really used at all on tegra.
There's a fair chance that it's not used: FIQ is not much used by linux on armv7 and above: unless you make use of cache+TLB lockdown / SRAM etc., FIQ is unlikely to be significantly faster than IRQ on recent CPUs. FIQ may also get reserved for use by TrustZone on some platforms, complicating the picture further.
Cheers
---Dave