Commit 135a972b authored by Christian Borntraeger's avatar Christian Borntraeger Committed by Peter Maydell
Browse files

translate: early exit in tb_flush if there is no tcg 



tb_flush does all kind of things, which are very tcg specific. As it
is called from some places even for KVM (e.g. gdb server) it is better
to detect these cases and do an early exit.
This also fixes a crash in the gdb server that was triggered by
commit 909eaac9 ("tb hash: track translated blocks with qht").

Suggested-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Reported-by: default avatarRichard Henderson <rth@twiddle.net>
Reported-by: default avatarBrent Baccala <cosine@freesoft.org>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Message-id: 1472148686-39841-1-git-send-email-borntraeger@de.ibm.com>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
parent b69a553b

translate-all.c

+3 −0
Original line number Diff line number Diff line
@@ -834,6 +834,9 @@ static void page_flush_tb(void) 
/* XXX: tb_flush is currently not thread safe */

void tb_flush(CPUState *cpu)

{

    if (!tcg_enabled()) {

        return;

    }

#if defined(DEBUG_FLUSH)

    printf("qemu: flush code_size=%ld nb_tbs=%d avg_tb_size=%ld\n",

           (unsigned long)(tcg_ctx.code_gen_ptr - tcg_ctx.code_gen_buffer),