tree: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git kvm-arm64/nv-wip-v5.0-rc1 head: 688c386ca096f2c1f2eee386697586c88df5d5bc commit: b8e5fdc85a46524d44283eca009e13f1dc91920c [3/75] KVM: arm64: Fix ICH_ELRSR_EL2 sysreg naming config: arm-axm55xx_defconfig (attached as .config) compiler: arm-linux-gnueabi-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 git checkout b8e5fdc85a46524d44283eca009e13f1dc91920c # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm
All error/warnings (new ones prefixed by >>):
In file included from include/linux/irqchip/arm-gic-v3.h:578:0,
from
arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c:19:
arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c: In function
'__vgic_v3_save_state':
>> arch/arm/include/asm/arch_gicv3.h:184:40: error: implicit declaration of
>> function 'read_ICH_ELRSR_EL2'; did you mean 'read_ICH_ELSR_EL2'?
>> [-Werror=implicit-function-declaration]
#define read_gicreg(r) read_##r()
^
>> arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c:229:11: note: in
>> expansion of macro 'read_gicreg'
elrsr = read_gicreg(ICH_ELRSR_EL2);
^~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/read_gicreg +229
arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c
207
208 void __hyp_text __vgic_v3_save_state(struct kvm_vcpu *vcpu)
209 {
210 struct vgic_v3_cpu_if *cpu_if = &vcpu->arch.vgic_cpu.vgic_v3;
211 u64 used_lrs = vcpu->arch.vgic_cpu.used_lrs;
212
213 /*
214 * Make sure stores to the GIC via the memory mapped interface
215 * are now visible to the system register interface when
reading the
216 * LRs, and when reading back the VMCR on non-VHE systems.
217 */
218 if (used_lrs || !has_vhe()) {
219 if (!cpu_if->vgic_sre) {
220 dsb(sy);
221 isb();
222 }
223 }
224
225 if (used_lrs) {
226 int i;
227 u32 elrsr;
228
> 229 elrsr = read_gicreg(ICH_ELRSR_EL2);
230
231 write_gicreg(cpu_if->vgic_hcr & ~ICH_HCR_EN,
ICH_HCR_EL2);
232
233 for (i = 0; i < used_lrs; i++) {
234 if (elrsr & (1 << i))
235 cpu_if->vgic_lr[i] &= ~ICH_LR_STATE;
236 else
237 cpu_if->vgic_lr[i] = __gic_v3_get_lr(i);
238
239 __gic_v3_set_lr(0, i);
240 }
241 }
242 }
243
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