qemu/include/exec/tb-context.h
Sergey Fedorov 3359baad36 tcg: Make tb_flush() thread safe
Use async_safe_run_on_cpu() to make tb_flush() thread safe.  This is
possible now that code generation does not happen in the middle of
execution.

It can happen that multiple threads schedule a safe work to flush the
translation buffer. To keep statistics and debugging output sane, always
check if the translation buffer has already been flushed.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org>
[AJB: minor re-base fixes]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <1470158864-17651-13-git-send-email-alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-27 11:57:30 +02:00

46 lines
1.3 KiB
C

/*
* Internal structs that QEMU exports to TCG
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef QEMU_TB_CONTEXT_H
#define QEMU_TB_CONTEXT_H
#include "qemu/thread.h"
#include "qemu/qht.h"
#define CODE_GEN_HTABLE_BITS 15
#define CODE_GEN_HTABLE_SIZE (1 << CODE_GEN_HTABLE_BITS)
typedef struct TranslationBlock TranslationBlock;
typedef struct TBContext TBContext;
struct TBContext {
TranslationBlock *tbs;
struct qht htable;
int nb_tbs;
/* any access to the tbs or the page table must use this lock */
QemuMutex tb_lock;
/* statistics */
unsigned tb_flush_count;
int tb_phys_invalidate_count;
};
#endif