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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-07-07 21:40:37 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-07-15 08:02:32 +0100 |
| commit | c2281ddcf38cb851857718acc388f1b9b7564f39 (patch) | |
| tree | d3ca780adcb192c1d3ecac44b8f8ab9dc9743f09 /include | |
| parent | 4b840f96096d11a69122de4b045a327a6e9a7dfa (diff) | |
| download | qemu-c2281ddcf38cb851857718acc388f1b9b7564f39.zip qemu-c2281ddcf38cb851857718acc388f1b9b7564f39.tar.gz qemu-c2281ddcf38cb851857718acc388f1b9b7564f39.tar.bz2 | |
accel/tcg: Introduce page_check_range_empty
Examine the interval tree to validate that a region
has no existing mappings.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230707204054.8792-10-richard.henderson@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/exec/cpu-all.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 472fe9a..94f828b 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -225,6 +225,18 @@ void page_reset_target_data(target_ulong start, target_ulong last); int page_check_range(target_ulong start, target_ulong len, int flags); /** + * page_check_range_empty: + * @start: first byte of range + * @last: last byte of range + * Context: holding mmap lock + * + * Return true if the entire range [@start, @last] is unmapped. + * The memory lock must be held so that the caller will can ensure + * the result stays true until a new mapping can be installed. + */ +bool page_check_range_empty(target_ulong start, target_ulong last); + +/** * page_get_target_data(address) * @address: guest virtual address * |