[Xen-changelog] [qemu-xen stable-4.10] exec: Explicitly export target AS from address_space_translate_internal

[patchbot@xxxxxxx]

commit 6424975ce912061ac9e4a375237b0c89d83d93e3
Author:     Alexey Kardashevskiy <aik@xxxxxxxxx>
AuthorDate: Thu Sep 21 18:50:53 2017 +1000
Commit:     Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
CommitDate: Mon Dec 4 21:54:29 2017 -0600

    exec: Explicitly export target AS from address_space_translate_internal
    
    This adds an AS** parameter to address_space_do_translate()
    to make it easier for the next patch to share FlatViews.
    
    This should cause no behavioural change.
    
    Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
    Message-Id: <20170921085110.25598-2-aik@xxxxxxxxx>
    Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
    (cherry picked from commit e76bb18f7e430e0c50fb38d051feacf268bd78f4)
    Signed-off-by: Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
---
 exec.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/exec.c b/exec.c
index d20c34c..bd94248 100644
--- a/exec.c
+++ b/exec.c
@@ -477,7 +477,8 @@ static MemoryRegionSection 
address_space_do_translate(AddressSpace *as,
                                                       hwaddr *xlat,
                                                       hwaddr *plen,
                                                       bool is_write,
-                                                      bool is_mmio)
+                                                      bool is_mmio,
+                                                      AddressSpace **target_as)
 {
     IOMMUTLBEntry iotlb;
     MemoryRegionSection *section;
@@ -504,6 +505,7 @@ static MemoryRegionSection 
address_space_do_translate(AddressSpace *as,
         }
 
         as = iotlb.target_as;
+        *target_as = iotlb.target_as;
     }
 
     *xlat = addr;
@@ -526,7 +528,7 @@ IOMMUTLBEntry address_space_get_iotlb_entry(AddressSpace 
*as, hwaddr addr,
 
     /* This can never be MMIO. */
     section = address_space_do_translate(as, addr, &xlat, &plen,
-                                         is_write, false);
+                                         is_write, false, &as);
 
     /* Illegal translation */
     if (section.mr == &io_mem_unassigned) {
@@ -549,7 +551,7 @@ IOMMUTLBEntry address_space_get_iotlb_entry(AddressSpace 
*as, hwaddr addr,
     plen -= 1;
 
     return (IOMMUTLBEntry) {
-        .target_as = section.address_space,
+        .target_as = as,
         .iova = addr & ~plen,
         .translated_addr = xlat & ~plen,
         .addr_mask = plen,
@@ -570,7 +572,8 @@ MemoryRegion *address_space_translate(AddressSpace *as, 
hwaddr addr,
     MemoryRegionSection section;
 
     /* This can be MMIO, so setup MMIO bit. */
-    section = address_space_do_translate(as, addr, xlat, plen, is_write, true);
+    section = address_space_do_translate(as, addr, xlat, plen, is_write, true,
+                                         &as);
     mr = section.mr;
 
     if (xen_enabled() && memory_access_is_direct(mr, is_write)) {
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#stable-4.10

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