f025692c99
translate_insn() implementations fetch instruction bytes piecemeal, which can cause qemu-user to generate inconsistent translations if another thread modifies them concurrently [1]. Fix by making pages containing translated instruction non-writable right before loading instruction bytes from them. [1] https://lists.nongnu.org/archive/html/qemu-devel/2021-08/msg00644.html Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20210805204835.158918-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/*
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* Translated block handling
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TRANSLATE_ALL_H
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#define TRANSLATE_ALL_H
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#include "exec/exec-all.h"
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/* translate-all.c */
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struct page_collection *page_collection_lock(tb_page_addr_t start,
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tb_page_addr_t end);
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void page_collection_unlock(struct page_collection *set);
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void tb_invalidate_phys_page_fast(struct page_collection *pages,
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tb_page_addr_t start, int len,
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uintptr_t retaddr);
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void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end);
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void tb_check_watchpoint(CPUState *cpu, uintptr_t retaddr);
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#ifdef CONFIG_USER_ONLY
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void page_protect(tb_page_addr_t page_addr);
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int page_unprotect(target_ulong address, uintptr_t pc);
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#endif
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#endif /* TRANSLATE_ALL_H */
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