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X-CSE-ConnectionGUID: HS8wq2aPQK+L/V/Xj8/0ag== X-CSE-MsgGUID: tWcPbZHqQ9ugnc6Iahpg1A== X-IronPort-AV: E=McAfee;i="6800,10657,11493"; a="58488313" X-IronPort-AV: E=Sophos;i="6.16,313,1744095600"; d="scan'208";a="58488313" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jul 2025 10:59:25 -0700 X-CSE-ConnectionGUID: zbQificGQ6SQHgfamneVcA== X-CSE-MsgGUID: Nr8pyyslSZW3SyFUOS5XWg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,313,1744095600"; d="scan'208";a="161838950" Received: from lkp-server01.sh.intel.com (HELO 9ee84586c615) ([10.239.97.150]) by orviesa004.jf.intel.com with ESMTP; 15 Jul 2025 10:59:19 -0700 Received: from kbuild by 9ee84586c615 with local (Exim 4.96) (envelope-from ) id 1ubjvw-000BPn-01; Tue, 15 Jul 2025 17:59:16 +0000 Date: Wed, 16 Jul 2025 01:58:36 +0800 From: kernel test robot To: Roman Kisel , alok.a.tiwari@oracle.com, arnd@arndb.de, bp@alien8.de, corbet@lwn.net, dave.hansen@linux.intel.com, decui@microsoft.com, haiyangz@microsoft.com, hpa@zytor.com, kys@microsoft.com, mhklinux@outlook.com, mingo@redhat.com, rdunlap@infradead.org, tglx@linutronix.de, Tianyu.Lan@microsoft.com, wei.liu@kernel.org, linux-arch@vger.kernel.org, linux-coco@lists.linux.dev, linux-doc@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org Cc: oe-kbuild-all@lists.linux.dev, apais@microsoft.com, benhill@microsoft.com, bperkins@microsoft.com, sunilmut@microsoft.com Subject: Re: [PATCH hyperv-next v4 04/16] arch/x86: mshyperv: Trap on access for some synthetic MSRs Message-ID: <202507160105.yQ34bnKl-lkp@intel.com> References: <20250714221545.5615-5-romank@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250714221545.5615-5-romank@linux.microsoft.com> Hi Roman, kernel test robot noticed the following build errors: [auto build test ERROR on d9016a249be5316ec2476f9947356711e70a16ec] url: https://github.com/intel-lab-lkp/linux/commits/Roman-Kisel/Documentation-hyperv-Confidential-VMBus/20250715-062125 base: d9016a249be5316ec2476f9947356711e70a16ec patch link: https://lore.kernel.org/r/20250714221545.5615-5-romank%40linux.microsoft.com patch subject: [PATCH hyperv-next v4 04/16] arch/x86: mshyperv: Trap on access for some synthetic MSRs config: x86_64-buildonly-randconfig-002-20250715 (https://download.01.org/0day-ci/archive/20250716/202507160105.yQ34bnKl-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250716/202507160105.yQ34bnKl-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202507160105.yQ34bnKl-lkp@intel.com/ All errors (new ones prefixed by >>): ld: vmlinux.o: in function `hv_set_non_nested_msr': >> arch/x86/kernel/cpu/mshyperv.c:91: undefined reference to `vmbus_is_confidential' vim +91 arch/x86/kernel/cpu/mshyperv.c 79 80 void hv_set_non_nested_msr(unsigned int reg, u64 value) 81 { 82 if (hv_is_synic_msr(reg) && ms_hyperv.paravisor_present) { 83 /* The hypervisor will get the intercept. */ 84 hv_ivm_msr_write(reg, value); 85 86 if (hv_is_sint_msr(reg)) { 87 /* 88 * Write proxy bit in the case of non-confidential VMBus. 89 * Using wrmsrq instruction so the following goes to the paravisor. 90 */ > 91 u32 proxy = vmbus_is_confidential() ? 0 : 1; 92 93 value |= (proxy << 20); 94 native_wrmsrq(reg, value); 95 } 96 } else { 97 native_wrmsrq(reg, value); 98 } 99 } 100 EXPORT_SYMBOL_GPL(hv_set_non_nested_msr); 101 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki