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From: | Alex Bennée |
Subject: | Re: [PATCH v4 01/12] accel/tcg: Preserve PAGE_ANON when changing page permissions |
Date: | Wed, 07 Apr 2021 14:55:20 +0100 |
User-agent: | mu4e 1.5.11; emacs 28.0.50 |
Richard Henderson <richard.henderson@linaro.org> writes: > Using mprotect() to change PROT_* does not change the MAP_ANON > previously set with mmap(). Our linux-user version of MTE only > works with MAP_ANON pages, so losing PAGE_ANON caused MTE to > stop working. > > Reported-by: Stephen Long <steplong@quicinc.com> > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Yay test case ;-) It certainly fails before and works after. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> -- Alex Bennée
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