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accel/tcg: Make page_alloc_target_data allocation constant

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Use a constant target data allocation size for all pages.
This will be necessary to reduce overhead of page tracking.
Since TARGET_PAGE_DATA_SIZE is now required, we can use this
to omit data tracking for targets that don't require it.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-09-17 14:25:12 +02:00
parent 7ed9e721cc
commit 50d4c8c1d4
5 changed files with 19 additions and 13 deletions
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8
accel/tcg/translate-all.c
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@ -2271,6 +2271,7 @@ void page_set_flags(target_ulong start, target_ulong end, int flags)
void page_reset_target_data(target_ulong start, target_ulong end)
{
#ifdef TARGET_PAGE_DATA_SIZE
target_ulong addr, len;
/*
@ -2293,15 +2294,17 @@ void page_reset_target_data(target_ulong start, target_ulong end)
g_free(p->target_data);
p->target_data = NULL;
}
#endif
}
#ifdef TARGET_PAGE_DATA_SIZE
void *page_get_target_data(target_ulong address)
{
PageDesc *p = page_find(address >> TARGET_PAGE_BITS);
return p ? p->target_data : NULL;
}
void *page_alloc_target_data(target_ulong address, size_t size)
void *page_alloc_target_data(target_ulong address)
{
PageDesc *p = page_find(address >> TARGET_PAGE_BITS);
void *ret = NULL;
@ -2309,11 +2312,12 @@ void *page_alloc_target_data(target_ulong address, size_t size)
if (p->flags & PAGE_VALID) {
ret = p->target_data;
if (!ret) {
p->target_data = ret = g_malloc0(size);
p->target_data = ret = g_malloc0(TARGET_PAGE_DATA_SIZE);
}
}
return ret;
}
#endif /* TARGET_PAGE_DATA_SIZE */
int page_check_range(target_ulong start, target_ulong len, int flags)
{