[Xen-changelog] [xen master] xen: correct xenheap_bits after "xen: support RAM at addresses 0 and 4096"

[patchbot@xxxxxxx]

commit e4d7c89e34bf62eda5118d61caef9858c38cdf57
Author:     Ian Campbell <ian.campbell@xxxxxxxxxx>
AuthorDate: Thu Oct 10 15:43:40 2013 +0100
Commit:     Ian Campbell <ian.campbell@xxxxxxxxxx>
CommitDate: Thu Oct 24 14:23:20 2013 +0100

    xen: correct xenheap_bits after "xen: support RAM at addresses 0 and 4096"
    
    This is incorrect after commit 1aac966e24e which shuffled the zones up by 
one.
    I've observed failures on arm64 systems with RAM at 
0x8,00000000-0x8,7fffffff
    since xenheap_bits ends up as 35 instead of 36 (which is the zone with all 
the
    RAM).
    
    Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Keir Fraser <keir@xxxxxxx>
    Cc: Tim Deegan <tim@xxxxxxx>
---
 xen/common/page_alloc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index fb8187b..4c17fbd 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -1364,7 +1364,7 @@ static unsigned int __read_mostly xenheap_bits;
 
 void __init xenheap_max_mfn(unsigned long mfn)
 {
-    xenheap_bits = fls(mfn) + PAGE_SHIFT - 1;
+    xenheap_bits = fls(mfn) + PAGE_SHIFT;
 }
 
 void init_xenheap_pages(paddr_t ps, paddr_t pe)
--
generated by git-patchbot for /home/xen/git/xen.git#master

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