From 415e6b0a686989d0000a82ba8404d4ab9cd1e6b7 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <andre@pc-01.localdomain>
Date: Tue, 21 Feb 2012 11:39:38 -0200
Subject: kernels/xe-guest-utilities

---
 kernels/xen/24344.patch | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 kernels/xen/24344.patch

(limited to 'kernels/xen/24344.patch')

diff --git a/kernels/xen/24344.patch b/kernels/xen/24344.patch
new file mode 100644
index 000000000..642b90867
--- /dev/null
+++ b/kernels/xen/24344.patch
@@ -0,0 +1,33 @@
+--- a/tools/libxc/xc_cpuid_x86.c	      2011-10-20 15:05:42.000000000 -0200
++++ b/tools/libxc/xc_cpuid_x86.c	      2012-02-15 00:01:46.307514813 -0200
+@@ -42,23 +42,23 @@
+ static void cpuid(const unsigned int *input, unsigned int *regs)
+ {
+     unsigned int count = (input[1] == XEN_CPUID_INPUT_UNUSED) ? 0 : input[1];
+-    asm (
+ #ifdef __i386__
++/* Use the stack to avoid reg constraint failures with some gcc flags */
++    asm (
+         "push %%ebx; push %%edx\n\t"
+-#else
+-        "push %%rbx; push %%rdx\n\t"
+-#endif
+         "cpuid\n\t"
+         "mov %%ebx,4(%4)\n\t"
+         "mov %%edx,12(%4)\n\t"
+-#ifdef __i386__
+         "pop %%edx; pop %%ebx\n\t"
++       : "=a" (regs[0]), "=c" (regs[2])
++       : "0" (input[0]), "1" (count), "S" (regs)
++       : "memory" );
+ #else
+-        "pop %%rdx; pop %%rbx\n\t"
++    asm (
++       "cpuid"
++       : "=a" (regs[0]), "=b" (regs[1]), "=c" (regs[2]), "=d" (regs[3])
++       : "0" (input[0]), "2" (count) );
+ #endif
+-        : "=a" (regs[0]), "=c" (regs[2])
+-        : "0" (input[0]), "1" (count), "S" (regs)
+-        : "memory" );
+ }
-- 
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