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[PATCH v5 03/19] accel/tcg: Add block comment for probe_access
From: |
Richard Henderson |
Subject: |
[PATCH v5 03/19] accel/tcg: Add block comment for probe_access |
Date: |
Fri, 8 May 2020 08:43:43 -0700 |
Reviewed-by: Peter Maydell <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
include/exec/exec-all.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 350c4b451b..d656a1f05c 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -330,6 +330,23 @@ static inline void
tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu,
{
}
#endif
+/**
+ * probe_access:
+ * @env: CPUArchState
+ * @addr: guest virtual address to look up
+ * @size: size of the access
+ * @access_type: read, write or execute permission
+ * @mmu_idx: MMU index to use for lookup
+ * @retaddr: return address for unwinding
+ *
+ * Look up the guest virtual address @addr. Raise an exception if the
+ * page does not satisfy @access_type. Raise an exception if the
+ * access (@addr, @size) hits a watchpoint. For writes, mark a clean
+ * page as dirty.
+ *
+ * Finally, return the host address for a page that is backed by RAM,
+ * or NULL if the page requires I/O.
+ */
void *probe_access(CPUArchState *env, target_ulong addr, int size,
MMUAccessType access_type, int mmu_idx, uintptr_t retaddr);
--
2.20.1
- [PATCH v5 00/19] target/arm: sve load/store improvements, Richard Henderson, 2020/05/08
- [PATCH v5 05/19] accel/tcg: Add probe_access_flags, Richard Henderson, 2020/05/08
- [PATCH v5 07/19] target/arm: Use cpu_*_data_ra for sve_ldst_tlb_fn, Richard Henderson, 2020/05/08
- [PATCH v5 08/19] target/arm: Drop manual handling of set/clear_helper_retaddr, Richard Henderson, 2020/05/08
- [PATCH v5 11/19] target/arm: Use SVEContLdSt in sve_ld1_r, Richard Henderson, 2020/05/08
- [PATCH v5 06/19] accel/tcg: Add endian-specific cpu_{ld, st}* operations, Richard Henderson, 2020/05/08
- [PATCH v5 09/19] target/arm: Add sve infrastructure for page lookup, Richard Henderson, 2020/05/08