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Sun, 22 Dec 2024 16:20:00 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Sun, 22 Dec 2024 22:19:39 +0100 From: "Arnd Bergmann" To: "kernel test robot" , "Arnd Bergmann" Cc: oe-lkp@lists.linux.dev, "kernel test robot" , linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, "Thomas Gleixner" , "Ingo Molnar" , "Borislav Petkov" , "Dave Hansen" , "H. Peter Anvin" , "Linus Torvalds" , "Andy Shevchenko" , "Matthew Wilcox" Message-Id: <0866384c-990f-40b2-8815-2525f9323453@app.fastmail.com> In-Reply-To: <202412201005.77fb063-lkp@intel.com> References: <202412201005.77fb063-lkp@intel.com> Subject: Re: [PATCH v2 07/11] x86: drop SWIOTLB and PHYS_ADDR_T_64BIT for PAE Content-Type: text/plain Content-Transfer-Encoding: 7bit On Fri, Dec 20, 2024, at 03:52, kernel test robot wrote: > > config: i386-randconfig-001-20241213 > compiler: gcc-12 > test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G > > (please refer to attached dmesg/kmsg for entire log/backtrace) > I haven't been able to figure this out, apparently something goes wrong on a KVM guest that has more than 32-bit of addressing (RAM+MMIO) when it uses a 32-bit phys_addr_t. I changed the patch now to only drop SWIOTLB, not PHYS_ADDR_T_64BIT. Arnd