Re: [PATCH v13 0/3] Fix issues with huge mapping in ioremap for ARM64

From: Chintan Pandya
Date: Thu Jun 07 2018 - 04:03:38 EST




On 6/6/2018 9:15 PM, Will Deacon wrote:
Hi Chintan,
Hi Will,


Thanks for sticking with this. I've reviewed the series now and I'm keen
for it to land in mainline. Just a couple of things below.


Thanks for all the reviews so far.

On Wed, Jun 06, 2018 at 12:31:18PM +0530, Chintan Pandya wrote:
This series of patches re-bring huge vmap back for arm64.

...

These patches can also go into '-stable' branch (if accepted)
for 4.6 onwards.

Not sure we need to target -stable, since we solved the crash by disabling
the use of huge io mappings.

If disabling of huge io mappings have gone into stable trees, then I
won't push for these changes there.


arch/arm64/include/asm/tlbflush.h | 7 ++++++
arch/arm64/mm/mmu.c | 48 +++++++++++++++++++++++++++++++++++----
arch/x86/mm/pgtable.c | 8 ++++---
include/asm-generic/pgtable.h | 8 +++----
lib/ioremap.c | 4 ++--

If you get an ack from the x86 folks, then I could take all of this via
arm64. Alternatively, now that I've reviewed the series this could happily
go via another tree (e.g. akpm).

Sure. I would wait for few days before either of them take notice of
this. If required, I will communicated with them.


Thanks,

Will

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel


Chintan
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center,
Inc. is a member of the Code Aurora Forum, a Linux Foundation
Collaborative Project