diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2020-05-08 08:43:45 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2020-05-11 11:21:34 +0100 |
| commit | 069cfe77d63e06e2b25912aea9fea6ea14bb246a (patch) | |
| tree | b4e6c9506c40946fbc060b83bceb1517cb691f7d /include/exec/cpu-all.h | |
| parent | 7a1bfee682d8474340ec0fced19b9f0faef9f568 (diff) | |
accel/tcg: Add probe_access_flags
This new interface will allow targets to probe for a page
and then handle watchpoints themselves. This will be most
useful for vector predicated memory operations, where one
page lookup can be used for many operations, and one test
can avoid many watchpoint checks.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200508154359.7494-6-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include/exec/cpu-all.h')
| -rw-r--r-- | include/exec/cpu-all.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h index 49384bb66a..43ddcf024c 100644 --- a/include/exec/cpu-all.h +++ b/include/exec/cpu-all.h @@ -328,7 +328,18 @@ CPUArchState *cpu_copy(CPUArchState *env); | CPU_INTERRUPT_TGT_EXT_3 \ | CPU_INTERRUPT_TGT_EXT_4) -#if !defined(CONFIG_USER_ONLY) +#ifdef CONFIG_USER_ONLY + +/* + * Allow some level of source compatibility with softmmu. We do not + * support any of the more exotic features, so only invalid pages may + * be signaled by probe_access_flags(). + */ +#define TLB_INVALID_MASK (1 << (TARGET_PAGE_BITS_MIN - 1)) +#define TLB_MMIO 0 +#define TLB_WATCHPOINT 0 + +#else /* * Flags stored in the low bits of the TLB virtual address. |