[PATCH v2.1] arm64: kgdb: handle read-only text / modules

[catalin.marinas@arm.com (Catalin Marinas)]

On Fri, Sep 23, 2016 at 10:49:53AM +0100, Catalin Marinas wrote:
> On Fri, Sep 23, 2016 at 04:42:08PM +0900, AKASHI Takahiro wrote:
> > Handle read-only cases (CONFIG_DEBUG_RODATA/CONFIG_DEBUG_SET_MODULE_RONX)
> > by using aarch64_insn_write() instead of probe_kernel_write().
> > See how this works:
> >     commit 2f896d586610 ("arm64: use fixmap for text patching")
> > 
> > Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
> > Reviewed-by: Mark Rutland <mark.rutland@arm.com>
> > Cc: Catalin Marinas <catalin.marinas@arm.com>
> > Cc: Will Deacon <will.deacon@arm.com>
> > Cc: Jason Wessel <jason.wessel@windriver.com>
> > Cc: <stable@vger.kernel.org> # 3.18-3.19: 2f896d5: arm64: use fixmap
> > Cc: <stable@vger.kernel.org> # 3.18-3.19: f6242ca: arm64: Fix text
> > Cc: <stable@vger.kernel.org> # 4.0-
> 
> Queued for 4.8 with a slight change in the last Cc: tag above:
> 
> Cc: <stable@vger.kernel.org> # 3.18.x-

I tried to apply this patch to 3.18, 4.1, 4.4, 4.7. It fails on all of
them with smaller or slightly larger conflicts.

So, I'll merge it in 4.8 without any "Cc: stable" tags, just a "Fixes:"
one for the commit introducing CONFIG_DEBUG_SET_MODULE_RONX (3.18). Once
the patch reaches mainline, could you please back-port and test it on
the stable kernel versions and send separate patches to
stable at vger.kernel.org?

Thanks.

-- 
Catalin