[Qemu-devel] [PATCH v5 01/23] memattrs: add debug attribute

[Brijesh Singh]

The debug attribute will be set when qemu attempts to access the guest
memory for debug (e.g memory access from gdbstub, memory dump commands
etc).

When guest memory is encrypted, the debug access will need to go through
the memory encryption APIs.

Cc: Alistair Francis <address@hidden>
Cc: Peter Maydell <address@hidden>
Cc: Edgar E. Iglesias" <address@hidden>
Cc: Richard Henderson <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Signed-off-by: Brijesh Singh <address@hidden>
---
 include/exec/memattrs.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/exec/memattrs.h b/include/exec/memattrs.h
index d4a16420984b..721362e06292 100644
--- a/include/exec/memattrs.h
+++ b/include/exec/memattrs.h
@@ -37,6 +37,8 @@ typedef struct MemTxAttrs {
     unsigned int user:1;
     /* Requester ID (for MSI for example) */
     unsigned int requester_id:16;
+    /* Debug memory access for encrypted guest */
+    unsigned int debug:1;
 } MemTxAttrs;
 
 /* Bus masters which don't specify any attributes will get this,
@@ -56,4 +58,6 @@ typedef struct MemTxAttrs {
 #define MEMTX_DECODE_ERROR      (1U << 1) /* nothing at that address */
 typedef uint32_t MemTxResult;
 
+/* Access the guest memory for debug purposes */
+#define MEMTXATTRS_DEBUG ((MemTxAttrs) { .debug = 1 })
 #endif
-- 
2.9.5