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accel/tcg: Assert one page in tb_invalidate_phys_page_range__locked

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Ensure that that both the start and last addresses are within
the same guest page.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230629082522.606219-3-mark.cave-ayland@ilande.co.uk>
[rth: Use tcg_debug_assert, simplify the expression]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Mark Cave-Ayland 2023-06-29 09:25:22 +01:00 committed by Richard Henderson
parent 3307e08c6f
commit e665cf72fe
1 changed files with 3 additions and 0 deletions
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accel/tcg/tb-maint.c
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@ -1092,6 +1092,9 @@ tb_invalidate_phys_page_range__locked(struct page_collection *pages,
TranslationBlock *current_tb = retaddr ? tcg_tb_lookup(retaddr) : NULL;
#endif /* TARGET_HAS_PRECISE_SMC */
/* Range may not cross a page. */
tcg_debug_assert(((start ^ last) & TARGET_PAGE_MASK) == 0);
/*
* We remove all the TBs in the range [start, last].
* XXX: see if in some cases it could be faster to invalidate all the code