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accel/tcg: Pass last not end to page_reset_target_data

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Pass the address of the last byte to be changed, rather than
the first address past the last byte.  This avoids overflow
when the last page of the address space is involved.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-03-06 02:03:13 +03:00
parent 49840a4a09
commit 10310cbd62
3 changed files with 7 additions and 8 deletions
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2
linux-user/mmap.c
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@ -946,7 +946,7 @@ abi_long target_madvise(abi_ulong start, abi_ulong len_in, int advice)
if (can_passthrough_madvise(start, end)) {
ret = get_errno(madvise(g2h_untagged(start), len, advice));
if ((advice == MADV_DONTNEED) && (ret == 0)) {
page_reset_target_data(start, start + len);
page_reset_target_data(start, start + len - 1);
}
}
}