commit 38df19fad71abe8823f8b416f672be95c2ac8d04
author Philippe Mathieu-Daudé <f4bug@amsat.org> Mon May 18 17:53:02 2020 +0200
committer Paolo Bonzini <pbonzini@redhat.com> Wed Jun 10 12:10:21 2020 -0400
tree bcf074420161ff7a017dfbd754aff73ae944659c
parent c535d68755576bfa33be7aef7bd294a601f776e0

exec: Let address_space_read/write_cached() propagate MemTxResult

Both address_space_read_cached_slow() and
address_space_write_cached_slow() return a MemTxResult type.
Do not discard it, return it to the caller.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

exec.c

diff --git a/exec.c b/exec.c
index be4be2d..0e197e5 100644
--- a/exec.c
+++ b/exec.c
@@ -3718,7 +3718,7 @@
 /* Called from RCU critical section. address_space_read_cached uses this
  * out of line function when the target is an MMIO or IOMMU region.
  */
-void
+MemTxResult
 address_space_read_cached_slow(MemoryRegionCache *cache, hwaddr addr,
                                    void *buf, hwaddr len)
 {
@@ -3728,15 +3728,15 @@
     l = len;
     mr = address_space_translate_cached(cache, addr, &addr1, &l, false,
                                         MEMTXATTRS_UNSPECIFIED);
-    flatview_read_continue(cache->fv,
-                           addr, MEMTXATTRS_UNSPECIFIED, buf, len,
-                           addr1, l, mr);
+    return flatview_read_continue(cache->fv,
+                                  addr, MEMTXATTRS_UNSPECIFIED, buf, len,
+                                  addr1, l, mr);
 }
 
 /* Called from RCU critical section. address_space_write_cached uses this
  * out of line function when the target is an MMIO or IOMMU region.
  */
-void
+MemTxResult
 address_space_write_cached_slow(MemoryRegionCache *cache, hwaddr addr,
                                     const void *buf, hwaddr len)
 {
@@ -3746,9 +3746,9 @@
     l = len;
     mr = address_space_translate_cached(cache, addr, &addr1, &l, true,
                                         MEMTXATTRS_UNSPECIFIED);
-    flatview_write_continue(cache->fv,
-                            addr, MEMTXATTRS_UNSPECIFIED, buf, len,
-                            addr1, l, mr);
+    return flatview_write_continue(cache->fv,
+                                   addr, MEMTXATTRS_UNSPECIFIED, buf, len,
+                                   addr1, l, mr);
 }
 
 #define ARG1_DECL                MemoryRegionCache *cache