unmodified drivers: hide xen_cpuid_base() in version 2.6.38+

Allow compilation of PVonHVM drivers with forward-ported xenlinux
sources in openSuSE 12.1.  xen_cpuid_base() is now in mainline, the
copy
in the xen tree leads to a compilation error.  The current state leads
to a compile error:

/usr/src/packages/BUILD/xen-4.2.24547/non-dbg/obj/default/platform-pci/platform-pci.c:121:
error: redefinition of 'xen_cpuid_base'
/usr/src/linux-3.0.13-0.11/arch/x86/include/asm/xen/hypervisor.h:43:
error: previous definition of 'xen_cpuid_base' was here

The reason is that the kernel sources are searched before the xen
sources for asm/hypervisor.h:

/usr/src/linux-3.0.13-0.11/arch/x86/include/asm/hypervisor.h
/usr/src/packages/BUILD/xen-4.2.24547/non-dbg/obj/default/include/asm/hypervisor.h

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Jan Beulich <jbeulich@suse.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
xen-unstable changeset:   25067:05768bd498f2
xen-unstable date:        Fri Mar 16 11:34:14 2012 +0100

diff --git a/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c b/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c
index 759a0d1caeb552cf64707e3db883e2fcb0bc1cf5..f36179ffe5e776b0f4c75fb19047aa5ff4418d3c 100644 (file)
--- a/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c
+++ b/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c
@@ -118,6 +118,7 @@ unsigned long alloc_xen_mmio(unsigned long len)
 
 #ifndef __ia64__
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38)
 static uint32_t xen_cpuid_base(void)
 {
        uint32_t base, eax, ebx, ecx, edx;
@@ -136,6 +137,7 @@ static uint32_t xen_cpuid_base(void)
 
        return 0;
 }
+#endif
 
 static int init_hypercall_stubs(void)
 {