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tcg: Move tb_phys_invalidate_count to tb_ctx

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We can call do_tb_phys_invalidate from an iocontext, which has
no per-thread tcg_ctx.  Move this to tb_ctx, which is global.
The actual update still takes place with a lock held, so only
an atomic set is required, not an atomic increment.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/457
Tested-by: Viktor Ashirov <vashirov@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-07-06 20:54:56 -07:00
parent 834361efd9
commit a4390647f7
4 changed files with 5 additions and 21 deletions
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8
accel/tcg/translate-all.c
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@ -1219,8 +1219,8 @@ static void do_tb_phys_invalidate(TranslationBlock *tb, bool rm_from_page_list)
/* suppress any remaining jumps to this TB */
tb_jmp_unlink(tb);
qatomic_set(&tcg_ctx->tb_phys_invalidate_count,
tcg_ctx->tb_phys_invalidate_count + 1);
qatomic_set(&tb_ctx.tb_phys_invalidate_count,
tb_ctx.tb_phys_invalidate_count + 1);
}
static void tb_phys_invalidate__locked(TranslationBlock *tb)
@ -2128,8 +2128,8 @@ void dump_exec_info(void)
qemu_printf("\nStatistics:\n");
qemu_printf("TB flush count %u\n",
qatomic_read(&tb_ctx.tb_flush_count));
qemu_printf("TB invalidate count %zu\n",
tcg_tb_phys_invalidate_count());
qemu_printf("TB invalidate count %u\n",
qatomic_read(&tb_ctx.tb_phys_invalidate_count));
tlb_flush_counts(&flush_full, &flush_part, &flush_elide);
qemu_printf("TLB full flushes %zu\n", flush_full);