From: Richard Henderson <richard.henderson@linaro.org>
To: "Alex Bennée" <alex.bennee@linaro.org>,
"Peter Maydell" <peter.maydell@linaro.org>
Cc: "Philippe Mathieu-Daudé" <philmd@linaro.org>,
iii@linux.ibm.com, qemu-devel@nongnu.org
Subject: Re: [PATCH 4/4] tests/tcg/multiarch: add vma-pthread.c
Date: Mon, 16 Jan 2023 09:21:56 -1000 [thread overview]
Message-ID: <3d4667fe-a593-ae3d-76fd-68f181f88918@linaro.org> (raw)
In-Reply-To: <87bkmye8xx.fsf@linaro.org>
On 1/16/23 06:27, Alex Bennée wrote:
> Although looking at the test I'm beginning to wonder what the sync point
> is between the mutator and the read/write threads?
What do you mean?
There is no explicit sync, because the mutator always leaves each page with the (one)
permission that the read/write/execute thread requires.
Within qemu... the sync point is primarily the syscall for read/write, and the tb
invalidate (during the mprotect) or the mmap lock for new translation for execute.
r~
next prev parent reply other threads:[~2023-01-16 19:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-24 15:18 [PATCH 0/4] accel/tcg: Fixes for user-only page tracking Richard Henderson
2022-12-24 15:18 ` [PATCH 1/4] accel/tcg: Fix tb_invalidate_phys_page_unwind Richard Henderson
2022-12-28 12:49 ` [PATCH 1a/4] " Philippe Mathieu-Daudé
2022-12-28 12:49 ` [PATCH 1b/4] accel/tcg: Unindent tb_invalidate_phys_page_unwind Philippe Mathieu-Daudé
2022-12-28 12:52 ` Philippe Mathieu-Daudé
2022-12-28 12:52 ` [PATCH 1a/4] accel/tcg: Fix tb_invalidate_phys_page_unwind Philippe Mathieu-Daudé
2022-12-24 15:18 ` [PATCH 2/4] accel/tcg: Use g_free_rcu for user-exec interval trees Richard Henderson
2022-12-28 7:19 ` Philippe Mathieu-Daudé
2022-12-24 15:18 ` [PATCH 3/4] accel/tcg: Handle false negative lookup in page_check_range Richard Henderson
2022-12-28 7:24 ` Philippe Mathieu-Daudé
2022-12-28 12:53 ` Philippe Mathieu-Daudé
2022-12-28 17:36 ` Richard Henderson
2022-12-28 18:27 ` Philippe Mathieu-Daudé
2022-12-28 18:30 ` Richard Henderson
2022-12-28 18:53 ` Philippe Mathieu-Daudé
2022-12-24 15:18 ` [PATCH 4/4] tests/tcg/multiarch: add vma-pthread.c Richard Henderson
2022-12-27 17:23 ` Alex Bennée
2023-01-13 15:17 ` Peter Maydell
2023-01-13 17:10 ` Alex Bennée
2023-01-16 12:40 ` Philippe Mathieu-Daudé
2023-01-16 15:07 ` Peter Maydell
2023-01-16 16:27 ` Alex Bennée
2023-01-16 16:48 ` Peter Maydell
2023-01-16 17:09 ` Alex Bennée
2023-01-16 19:21 ` Richard Henderson [this message]
2023-01-20 14:58 ` Peter Maydell
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