Re: [Xen-devel] [PATCH 1/4] Revert "xen: arm: force guest memory accesses to cacheable when MMU is disabled"

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 29/01/14 12:11, Ian Campbell wrote:
> This reverts commit 89eb02c2204a0b42a0aa169f107bc346a3fef802.
>
> This approach has a short coming in that it breaks when a guest enables its
> MMU (SCTLR.M, disabling HCR.DC) without enabling caches (SCTLR.C) first/at the
> same time. It turns out that FreeBSD does this.
By reverting this patch, you also revert some insteresting fix:
  - Fixing HSR_SYSREG_CRN_MASK
  - Use of HSR_SYSREG_

I think this both changes should be kept.

Otherwise, I would move this patch at the end of the series if we need 
to bisect the code.
--
Julien Grall

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