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| From: | Richard Henderson |
| Subject: | Re: [PATCH 00/14] target/i386: Use atomic operations for pte updates |
| Date: | Mon, 22 Aug 2022 19:05:39 -0700 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 |
On 8/22/22 16:57, Richard Henderson wrote:
This patch set does two things:
(1) Remove assert(!probe) from the x86 tlb_fill
It turns out that this is a prerequisite for
[PATCH v6 00/21] linux-user: Fix siginfo_t contents when jumping
to non-readable pages
because of a new use of probe_access(..., nonfault)
when comparing TBs that cross a page boundary.
Turns out this was a bug in the v6 patch set. We don't require nonfault probes on PROT_EXEC at all; v7 will fix this.
But it's still nice that non-faulting probes now work... r~
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