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authorRusty Russell <rusty@rustcorp.com.au>2007-10-22 11:03:26 +1000
committerRusty Russell <rusty@rustcorp.com.au>2007-10-23 15:49:50 +1000
commit3c6b5bfa3cf3b4057788e08482a468cc3bc00780 (patch)
treef0d67890f6f8c9d0840c9b19a483ec06cbf822ef /drivers/lguest/lg.h
parent6649bb7af6a819b675bfcf22ab704737e905645a (diff)
downloadop-kernel-dev-3c6b5bfa3cf3b4057788e08482a468cc3bc00780.zip
op-kernel-dev-3c6b5bfa3cf3b4057788e08482a468cc3bc00780.tar.gz
Introduce guest mem offset, static link example launcher
In order to avoid problematic special linking of the Launcher, we give the Host an offset: this means we can use any memory region in the Launcher as Guest memory rather than insisting on mmap() at 0. The result is quite pleasing: a number of casts are replaced with simple additions. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/lg.h')
-rw-r--r--drivers/lguest/lg.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h
index 399eab8..54f2c24 100644
--- a/drivers/lguest/lg.h
+++ b/drivers/lguest/lg.h
@@ -142,6 +142,9 @@ struct lguest
struct mm_struct *mm; /* == tsk->mm, but that becomes NULL on exit */
u16 guestid;
u32 pfn_limit;
+ /* This provides the offset to the base of guest-physical
+ * memory in the Launcher. */
+ void __user *mem_base;
u32 page_offset;
u32 cr2;
int halted;
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