[Qemu-devel] [For 2.5?? PATCH 1/1] qemu_{real_}host_page_[size|mask] change types to ram_addr_t

["Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>]

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

Anthony reported that >4GB guests on Xen with 32bit QEMU
broke after my 4ed023c (Round up RAMBlock sizes).

In that patch I mask sizes against qemu_host_page_size/mask
which are uintptr_t, and thus 32bit on a 32bit QEMU, even
though the ram space might be bigger than 4GB on Xen.

ram_addr_t is uintptr_t on KVM and uint64_t on Xen; so
there should be no change on KVM, and on Xen we always get
the larger size.

Remove the ~10 year old scary comment that the type of these
variables is probably wrong.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reported-by: Anthony PERARD <anthony.perard@citrix.com>
Fixes: 4ed023ce2a39ab5812d33cf4d819def168965a7f
---
 include/exec/cpu-all.h | 9 ++++-----
 translate-all.c        | 4 ++--
 translate-common.c     | 4 ++--
 3 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index f9998b9..e23b852 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -174,11 +174,10 @@ extern unsigned long reserved_va;
 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1)
 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK)
 
-/* ??? These should be the larger of uintptr_t and target_ulong.  */
-extern uintptr_t qemu_real_host_page_size;
-extern uintptr_t qemu_real_host_page_mask;
-extern uintptr_t qemu_host_page_size;
-extern uintptr_t qemu_host_page_mask;
+extern ram_addr_t qemu_real_host_page_size;
+extern ram_addr_t qemu_real_host_page_mask;
+extern ram_addr_t qemu_host_page_size;
+extern ram_addr_t qemu_host_page_mask;
 
 #define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask)
 #define REAL_HOST_PAGE_ALIGN(addr) (((addr) + qemu_real_host_page_size - 1) & \
diff --git a/translate-all.c b/translate-all.c
index a940bd2..317f251 100644
--- a/translate-all.c
+++ b/translate-all.c
@@ -117,8 +117,8 @@ typedef struct PageDesc {
 
 #define V_L1_SHIFT (L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS - V_L1_BITS)
 
-uintptr_t qemu_host_page_size;
-uintptr_t qemu_host_page_mask;
+ram_addr_t qemu_host_page_size;
+ram_addr_t qemu_host_page_mask;
 
 /* The bottom level has pointers to PageDesc */
 static void *l1_map[V_L1_SIZE];
diff --git a/translate-common.c b/translate-common.c
index 619feb4..2fe2d1e 100644
--- a/translate-common.c
+++ b/translate-common.c
@@ -20,8 +20,8 @@
 #include "qemu-common.h"
 #include "qom/cpu.h"
 
-uintptr_t qemu_real_host_page_size;
-uintptr_t qemu_real_host_page_mask;
+ram_addr_t qemu_real_host_page_size;
+ram_addr_t qemu_real_host_page_mask;
 
 #ifndef CONFIG_USER_ONLY
 /* mask must never be zero, except for A20 change call */
-- 
2.5.0