On 02/09/2019 08:06, kbuild test robot wrote:

Hi Steven,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3-rc6 next-20190830]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Steven-Price/arm64-Stolen-time-support/20190901-185152
config: i386-randconfig-a002-201935 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-11) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <redacted>

All error/warnings (new ones prefixed by >>):

   In file included from include/kvm/arm_hypercalls.h:7:0,
                    from <command-line>:0:

quoted

quoted

arch/x86/include/asm/kvm_emulate.h:349:22: error: 'NR_VCPU_REGS' undeclared here (not in a function)

     unsigned long _regs[NR_VCPU_REGS];
                         ^~~~~~~~~~~~

This is because x86's asm/kvm_emulate.h can't be included by itself (and
doesn't even exist on other architectures). This new header file doesn't
make sense to include on x86, so I'll squash in the following to prevent
building the header file except on arm/arm64.

Steve

----8<----

diff --git a/include/Kbuild b/include/Kbuild
index c38f0d46b267..f775ea28716e 100644
--- a/include/Kbuild
+++ b/include/Kbuild

@@ -67,6 +67,8 @@ header-test-			+= keys/big_key-type.h
 header-test-			+= keys/request_key_auth-type.h
 header-test-			+= keys/trusted.h
 header-test-			+= kvm/arm_arch_timer.h
+header-test-$(CONFIG_ARM)	+= kvm/arm_hypercalls.h
+header-test-$(CONFIG_ARM64)	+= kvm/arm_hypercalls.h
 header-test-			+= kvm/arm_pmu.h
 header-test-$(CONFIG_ARM)	+= kvm/arm_psci.h
 header-test-$(CONFIG_ARM64)	+= kvm/arm_psci.h

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