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[Qemu-devel] [PATCH] linux-user: take RESERVED_VA into account for g2h_v
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH] linux-user: take RESERVED_VA into account for g2h_valid() |
Date: |
Thu, 2 Feb 2012 03:19:08 +0100 |
When running with -R (RESERVED_VA > 0) all guest virtual addresses
are within the [0..RESERVED_VA] range. Reflect this with g2h_valid()
too so we can safely check for boundaries of our guest address space.
This is required to have the /proc/self/maps code not show maps that
aren't accessible from the guest process's point of view.
Signed-off-by: Alexander Graf <address@hidden>
---
cpu-all.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/cpu-all.h b/cpu-all.h
index e2c3c49..d42a06e 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -204,7 +204,8 @@ extern unsigned long reserved_va;
#else
#define h2g_valid(x) ({ \
unsigned long __guest = (unsigned long)(x) - GUEST_BASE; \
- __guest < (1ul << TARGET_VIRT_ADDR_SPACE_BITS); \
+ (__guest < (1ul << TARGET_VIRT_ADDR_SPACE_BITS)) && \
+ (!RESERVED_VA || (__guest < RESERVED_VA)); \
})
#endif
--
1.6.0.2
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