Re: arch/x86/xen/suspend.c:70:9: error: implicit declaration of function 'xen_pv_domain'

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On 12/22/2015 06:49 AM, Stefano Stabellini wrote:
On Mon, 21 Dec 2015, Andrew Morton wrote:
On Mon, 21 Dec 2015 00:43:17 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote:

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   69c37a92ddbf79d9672230f21a04580d7ac2f4c3
commit: 71458cfc782eafe4b27656e078d379a34e472adf kernel: add support for gcc 5
date:   1 year, 2 months ago
config: x86_64-randconfig-x006-201551 (attached as .config)
reproduce:
         git checkout 71458cfc782eafe4b27656e078d379a34e472adf
         # save the attached .config to linux build tree
         make ARCH=x86_64

All errors (new ones prefixed by >>):

    arch/x86/xen/suspend.c: In function 'xen_arch_pre_suspend':
arch/x86/xen/suspend.c:70:9: error: implicit declaration of function 'xen_pv_domain' [-Werror=implicit-function-declaration]
         if (xen_pv_domain())
             ^
hm, tricky!

--- a/arch/x86/xen/suspend.c~arch-x86-xen-suspendc-include-xen-xenh
+++ a/arch/x86/xen/suspend.c
@@ -1,6 +1,7 @@
  #include <linux/types.h>
  #include <linux/tick.h>
+#include <xen/xen.h>
  #include <xen/interface/xen.h>
  #include <xen/grant_table.h>
  #include <xen/events.h>

Looks like the right fix. David? Boris?

Why are we trying to compile this if CONFIG_XEN is not set?

-boris

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