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Re: [qemu-s390x] [Qemu-devel] [PATCH v1 4/9] tcg: Enforce single page ac

From: Richard Henderson
Subject: Re: [qemu-s390x] [Qemu-devel] [PATCH v1 4/9] tcg: Enforce single page access in probe_write() for !CONFIG_USER_ONLY
Date: Fri, 23 Aug 2019 08:28:58 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0

On 8/23/19 3:07 AM, David Hildenbrand wrote:
> While the CONFIG_USER_ONLY variant can handle multiple pages (no MMU), the
> !CONFIG_USER_ONLY variant can't and won't. We'll want to convert
> probe_write() to return a host address (similar to tlb_vaddr_to_host())
> soon. This only works on page granularity.
> Signed-off-by: David Hildenbrand <address@hidden>
> ---
>  accel/tcg/cputlb.c | 2 ++
>  1 file changed, 2 insertions(+)

As I just mentioned in the previous, I think the two implementations should 

Anyway, the "multiple pages" thing above still means exactly two, since if
there were three pages involved we were only probing two of them, and the third
could still be unmapped.


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