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Wed, 05 Nov 2025 11:31:49 +0000 Date: Wed, 05 Nov 2025 11:31:49 +0000 Message-ID: <86bjlgvhp6.wl-maz@kernel.org> From: Marc Zyngier To: kernel test robot Cc: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, oe-kbuild-all@lists.linux.dev, Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Christoffer Dall , Volodymyr Babchuk Subject: Re: [PATCH 05/33] KVM: arm64: GICv3: Detect and work around the lack of ICV_DIR_EL1 trapping In-Reply-To: <202511050925.kQxVnIUB-lkp@intel.com> References: <20251103165517.2960148-6-maz@kernel.org> <202511050925.kQxVnIUB-lkp@intel.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: lkp@intel.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, oe-kbuild-all@lists.linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, christoffer.dall@arm.com, Volodymyr_Babchuk@epam.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Wed, 05 Nov 2025 02:01:36 +0000, kernel test robot wrote: > > Hi Marc, > > kernel test robot noticed the following build errors: > > [auto build test ERROR on kvmarm/next] > [also build test ERROR on linus/master v6.18-rc4 next-20251104] > [cannot apply to arm64/for-next/core tip/irq/core] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Marc-Zyngier/irqchip-gic-Add-missing-GICH_HCR-control-bits/20251104-011133 > base: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next > patch link: https://lore.kernel.org/r/20251103165517.2960148-6-maz%40kernel.org > patch subject: [PATCH 05/33] KVM: arm64: GICv3: Detect and work around the lack of ICV_DIR_EL1 trapping > config: arm64-randconfig-003-20251105 (https://download.01.org/0day-ci/archive/20251105/202511050925.kQxVnIUB-lkp@intel.com/config) > compiler: aarch64-linux-gcc (GCC) 8.5.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251105/202511050925.kQxVnIUB-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/202511050925.kQxVnIUB-lkp@intel.com/ > > All errors (new ones prefixed by >>): > > arch/arm64/kernel/hyp-stub.S: Assembler messages: > >> arch/arm64/kernel/hyp-stub.S:59: Error: unknown or missing system register name at operand 2 -- `mrs x1,ich_vtr_el2' > > > vim +59 arch/arm64/kernel/hyp-stub.S > > 45 > 46 .align 11 > 47 > 48 SYM_CODE_START_LOCAL(elx_sync) > 49 cmp x0, #HVC_SET_VECTORS > 50 b.ne 1f > 51 msr vbar_el2, x1 > 52 b 9f > 53 > 54 1: cmp x0, #HVC_FINALISE_EL2 > 55 b.eq __finalise_el2 > 56 > 57 cmp x0, #HVC_GET_ICH_VTR_EL2 > 58 b.ne 2f > > 59 mrs x1, ich_vtr_el2 Ah, ancient assembler that doesn't understand the GICv3 registers... Oh well, I'll give it the generated encoding instead. M. -- Without deviation from the norm, progress is not possible.