Add a new TLB flag to force all the accesses made to a page to follow the slow-path.
The TLB entries referring guest pages with the DIRTY_MEMORY_EXCLUSIVE bit clean will have this flag set. Suggested-by: Jani Kokkonen <jani.kokko...@huawei.com> Suggested-by: Claudio Fontana <claudio.font...@huawei.com> Signed-off-by: Alvise Rigo <a.r...@virtualopensystems.com> --- include/exec/cpu-all.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 83b1781..f8d8feb 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -277,6 +277,14 @@ CPUArchState *cpu_copy(CPUArchState *env); #define TLB_NOTDIRTY (1 << 4) /* Set if TLB entry is an IO callback. */ #define TLB_MMIO (1 << 5) +/* Set if TLB entry references a page that requires exclusive access. */ +#define TLB_EXCL (1 << 6) + +/* Do not allow a TARGET_PAGE_MASK which covers one or more bits defined + * above. */ +#if TLB_EXCL >= TARGET_PAGE_SIZE +#error TARGET_PAGE_MASK covering the low bits of the TLB virtual address +#endif void dump_exec_info(FILE *f, fprintf_function cpu_fprintf); void dump_opcount_info(FILE *f, fprintf_function cpu_fprintf); -- 2.7.0
