Re: [PATCH] x86/hyperv: make vapic support x2apic mode

On Tue, Oct 01, 2019 at 06:44:08AM +0800, kbuild test robot wrote: > url: > https://github.com/0day-ci/linux/commits/Roman-Kagan/x86-hyperv-make-vapic-support-x2apic-mode/20191001-044238 > config: x86_64-randconfig-e004-201939 (attached as .config) > compiler: gcc-7 (Debian 7.4.0-13) 7.4.0 >

Re: [PATCH] x86/hyperv: make vapic support x2apic mode

Hi Roman, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/x86/core] [cannot apply to v5.4-rc1 next-20190930] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify

Re: [PATCH] x86/hyperv: make vapic support x2apic mode

Hi Roman, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/x86/core] [cannot apply to v5.4-rc1 next-20190930] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify

[PATCH] x86/hyperv: make vapic support x2apic mode

Now that there's Hyper-V IOMMU driver, Linux can switch to x2apic mode when supported by the vcpus. However, the apic access functions for Hyper-V enlightened apic assume xapic mode only. As a result, Linux fails to bring up secondary cpus when run as a guest in QEMU/KVM with both hv_apic and