linux-kernel - Re: [PATCH V2 1/3] x86/Hyper-V: Set x2apic destination mode to physical when x2apic is available

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <201902041344.QSiW6kDL%fengguang.wu@intel.com>
Date:   Mon, 4 Feb 2019 13:57:04 +0800
From:   kbuild test robot <lkp@...el.com>
To:     lantianyu1986@...il.com
Cc:     kbuild-all@...org, Lan Tianyu <Tianyu.Lan@...rosoft.com>,
        kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
        sashal@...nel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, hpa@...or.com, x86@...nel.org, joro@...tes.org,
        mchehab+samsung@...nel.org, davem@...emloft.net,
        gregkh@...uxfoundation.org, akpm@...ux-foundation.org,
        nicolas.ferre@...rochip.com, arnd@...db.de,
        linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
        iommu@...ts.linux-foundation.org, michael.h.kelley@...rosoft.com,
        vkuznets@...hat.com, alex.williamson@...hat.com,
        dan.carpenter@...cle.com
Subject: Re: [PATCH V2 1/3] x86/Hyper-V: Set x2apic destination mode to
 physical when x2apic is available

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-20190201]
[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: x86_64-randconfig-x005-201905 (attached as .config)
compiler: gcc-8 (Debian 8.2.0-14) 8.2.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

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); did you mean 'x2apic_mode'?
      x2apic_phys = 1;
      ^~~~~~~~~~~
      x2apic_mode
   arch/x86//kernel/cpu/mshyperv.c:339:3: note: each undeclared identifier is reported only once for each function it appears in

vim +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

Download attachment ".config.gz" of type "application/gzip" (35413 bytes)