Re: [PATCH] ARM: MMU: fix wrong dma_flush_range in arm_create_pte()

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On Wed, Aug 15, 2018 at 6:49 AM Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote:
>
> On Wed, Aug 15, 2018 at 03:46:59PM +0200, Sascha Hauer wrote:
> > Since 7ba0f2d299 arm_create_pte() flushes the page table entries itself
> > and it's no longer done in arch_remap_range(). Unfortunately it does
> > not flush the modified 1st level page table entry, but instead the base
> > of the page table. Fix it up.
> >
> > Fixes: 7ba0f2d299 ARM: mmu: fix cache flushing when replacing a section with a PTE
>
> Since the patch breaking it was the reason for creating v2018.07.1, this
> will be a reason for creating v2018.07.2 (and also v2018.08.1)
>
> I noticed misbehaviour when trying to sue network on a i.MX53 based
> board, here we got tronsmission timeouts. These are fixed with this patch
>

Heh, you beat me to it by a couple of hours! I came up with the same
patch debugging networking (and various others) issues on i.MX51 last
night and was about to submit it.

Thanks,
Andrey Smirnov

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