Hi Lan, Thank you for the patch! Yet something to improve:
[auto build test ERROR on iommu/next] [also build test ERROR on v5.0-rc4 next-20190204] [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/lantianyu1986-gmail-com/x86-Hyper-V-IOMMU-Add-Hyper-V-IOMMU-driver-to-support-x2apic-mode/20190204-132009 base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next config: i386-randconfig-a3-02040849 (attached as .config) compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): arch/x86/kernel/cpu/mshyperv.c: In function 'ms_hyperv_init_platform': >> arch/x86/kernel/cpu/mshyperv.c:339:3: error: 'x2apic_phys' undeclared (first >> use in this function) x2apic_phys = 1; ^ arch/x86/kernel/cpu/mshyperv.c:339:3: note: each undeclared identifier is reported only once for each function it appears in vim +/x2apic_phys +339 arch/x86/kernel/cpu/mshyperv.c 331 332 /* 333 * Hyper-V doesn't provide irq remapping for IO-APIC. To enable x2apic, 334 * set x2apic destination mode to physcial mode when x2apic is available 335 * and Hyper-V IOMMU driver makes sure cpus assigned with IO-APIC irqs 336 * have 8-bit APIC id. 337 */ 338 if (IS_ENABLED(CONFIG_HYPERV_IOMMU) && x2apic_supported()) > 339 x2apic_phys = 1; 340 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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