Re: [PATCH v4 2/2] arm/arm64: KVM: Add KVM_GET/SET_VCPU_EVENTS
From: kbuild test robot
Date: Thu Jun 07 2018 - 23:22:03 EST
Hi Dongjiu,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on v4.17]
[cannot apply to next-20180607]
[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/Dongjiu-Geng/support-exception-state-migration-and-set-VSESR_EL2-by-user-space/20180608-063827
base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64
All warnings (new ones prefixed by >>):
arch/arm64/kvm/guest.c: In function 'kvm_arm_vcpu_get_events':
>> arch/arm64/kvm/guest.c:295:26: warning: argument to 'sizeof' in 'memset' call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess]
memset(events, 0, sizeof(events));
^
vim +295 arch/arm64/kvm/guest.c
291
292 int kvm_arm_vcpu_get_events(struct kvm_vcpu *vcpu,
293 struct kvm_vcpu_events *events)
294 {
> 295 memset(events, 0, sizeof(events));
296
297 events->exception.serror_pending = !!(vcpu->arch.hcr_el2 & HCR_VSE);
298 events->exception.serror_has_esr =
299 cpus_have_const_cap(ARM64_HAS_RAS_EXTN);
300
301 if (events->exception.serror_pending &&
302 events->exception.serror_has_esr)
303 events->exception.serror_esr = vcpu_get_vsesr(vcpu);
304 else
305 events->exception.serror_esr = 0;
306
307 return 0;
308 }
309
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