[Xen-changelog] [xen stable-4.2] x86/EFI: fix runtime call status for compat mode Dom0

[patchbot@xxxxxxx]

commit 3432d58eaad518612a30cfcd0a6f15447ca87c00
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue Apr 30 11:05:51 2013 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Apr 30 11:05:51 2013 +0200

    x86/EFI: fix runtime call status for compat mode Dom0
    
    The top two bits (indicating error/warning classification) need to
    remain the top two bits.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Keir Fraser <keir@xxxxxxx>
    master commit: a7ac9597a7fc6ca934957eb78b41e26638281953
    master date: 2013-04-29 11:27:54 +0200
---
 xen/arch/x86/efi/runtime.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/xen/arch/x86/efi/runtime.c b/xen/arch/x86/efi/runtime.c
index 9fbf5b7..b8847dd 100644
--- a/xen/arch/x86/efi/runtime.c
+++ b/xen/arch/x86/efi/runtime.c
@@ -477,7 +477,7 @@ int efi_runtime_call(struct xenpf_efi_runtime_call *op)
 #ifndef COMPAT
     op->status = status;
 #else
-    op->status = (status & 0x3fffffff) | (status >> 62);
+    op->status = (status & 0x3fffffff) | ((status >> 32) & 0xc0000000);
 #endif
 
     return rc;
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.2

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