[Qemu-devel] [PATCH for-1.7 v2 1/8] exec: declare TARGET_PHYS_ADDR_SPACE_MAX to limit memory regions rendered by exec

From: Marcel Apfelbaum <marcel.a@redhat.com>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, ehabkost@redhat.com, mst@redhat.com,
	jan.kiszka@siemens.com, agraf@suse.de, lcapitulino@redhat.com,
	aliguori@amazon.com, pbonzini@redhat.com, afaerber@suse.de
Subject: [Qemu-devel] [PATCH for-1.7 v2 1/8] exec: declare TARGET_PHYS_ADDR_SPACE_MAX to limit memory regions rendered by exec
Date: Thu,  7 Nov 2013 12:41:17 +0200	[thread overview]
Message-ID: <1383820884-29596-2-git-send-email-marcel.a@redhat.com> (raw)
In-Reply-To: <1383820884-29596-1-git-send-email-marcel.a@redhat.com>

The page table logic in exec.c assumes
that memory addresses are at most TARGET_PHYS_ADDR_SPACE_BITS.
Use TARGET_PHYS_ADDR_SPACE_MAX as max size for memory regions
rendered by exec.

Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
---
 include/exec/address-spaces.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/exec/address-spaces.h b/include/exec/address-spaces.h
index 3d12cdd..174cc05 100644
--- a/include/exec/address-spaces.h
+++ b/include/exec/address-spaces.h
@@ -23,6 +23,10 @@
 
 #ifndef CONFIG_USER_ONLY
 
+#define TARGET_PHYS_ADDR_SPACE_MAX                         \
+    (TARGET_PHYS_ADDR_SPACE_BITS == 64 ?                   \
+    UINT64_MAX : (0x1ULL << TARGET_PHYS_ADDR_SPACE_BITS))
+
 /* Get the root memory region.  This interface should only be used temporarily
  * until a proper bus interface is available.
  */
-- 
1.8.3.1
