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translate-all: call qemu_spin_destroy for PageDesc 

The radix tree is append-only, but we can fail to insert
a PageDesc if the insertion races with another thread.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Robert Foley <robert.foley@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200609200738.445-8-robert.foley@linaro.org>
Message-Id: <20200612190237.30436-11-alex.bennee@linaro.org>
This commit is contained in:
Emilio G. Cota 2020-06-12 20:02:29 +01:00 committed by Alex Bennée
parent 938e897a66
commit 3f640eb881
1 changed files with 9 additions and 0 deletions
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9
accel/tcg/translate-all.c
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@ -547,6 +547,15 @@ static PageDesc *page_find_alloc(tb_page_addr_t index, int alloc)
#endif
existing = atomic_cmpxchg(lp, NULL, pd);
if (unlikely(existing)) {
#ifndef CONFIG_USER_ONLY
{
int i;
for (i = 0; i < V_L2_SIZE; i++) {
qemu_spin_destroy(&pd[i].lock);
}
}
#endif
g_free(pd);
pd = existing;
}