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Sat, 11 Oct 2025 11:15:54 -0700 (PDT) Received: from twshared23637.05.prn5.facebook.com (2620:10d:c0a8:1c::1b) by mail.thefacebook.com (2620:10d:c0a9:6f::237c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.20; Sat, 11 Oct 2025 18:15:52 +0000 Received: by devgpu015.cco6.facebook.com (Postfix, from userid 199522) id 818C7F5FBD1; Sat, 11 Oct 2025 11:15:48 -0700 (PDT) Date: Sat, 11 Oct 2025 11:15:48 -0700 From: Alex Mastro To: kernel test robot CC: Alex Williamson , , Jason Gunthorpe , Alejandro Jimenez , , Subject: Re: [PATCH v3 3/3] vfio/type1: handle DMA map/unmap up to the addressable limit Message-ID: References: <20251010-fix-unmap-v3-3-306c724d6998@fb.com> <202510111953.naYvy8XB-lkp@intel.com> Precedence: bulk X-Mailing-List: kvm@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: <202510111953.naYvy8XB-lkp@intel.com> X-FB-Internal: Safe X-Proofpoint-GUID: ssuZxwZyBSXCoG3vKVH1idc20Wx-blS0 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMDExMDEwMyBTYWx0ZWRfX6Yf2aTvAlN8+ i39orf7TZIZ+19JGaknRs3XjzyGwqIvtSdHXQ6CU/ADzDIIE00gyfOFapjpB2MwcVSZl9YDlJR6 o5OcqVDfsrY4sBB9DstgNX3NqBJpRZKhwIMBAynQYKZFHtP+FzgfV42czu9mqzjmVSfo+Ut1l01 leo1n6bzdV/cAREhL3Tm1ZScZGLvU1ZKg2JxLW63BnReoDKGj/O7NCbDc1sbPzhdoav9O7ffwea V/ms7aNkU6p/q+egGnOj0nvJIgDDyX1FopWSz3Iag7OmxsPTCiiZbL6lbISX1hrqoxVj4AklXvN f0vCOXv+Mgo/v6y3+eLiZVUU1wlzy0wn7slxNgfvxk0SedCgoU7ip56TzM0AX3/RibxFMXUBIc1 F4P4zcK7AeIvxlqSdCqC47sLuFbpyQ== X-Authority-Analysis: v=2.4 cv=M/NA6iws c=1 sm=1 tr=0 ts=68ea9eda cx=c_pps a=MfjaFnPeirRr97d5FC5oHw==:117 a=MfjaFnPeirRr97d5FC5oHw==:17 a=kj9zAlcOel0A:10 a=x6icFKpwvdMA:10 a=yATVoKGFPd4u651EB8cA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: ssuZxwZyBSXCoG3vKVH1idc20Wx-blS0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-10-11_03,2025-10-06_01,2025-03-28_01 On Sat, Oct 11, 2025 at 07:57:07PM +0800, kernel test robot wrote: > >> include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'dma_addr_t' {aka 'unsigned int'} changes value from '18446744073709551615' to '4294967295' [-Woverflow] > 25 | #define U64_MAX ((u64)~0ULL) > | ^ > drivers/vfio/vfio_iommu_type1.c:1361:28: note: in expansion of macro 'U64_MAX' > 1361 | iova_end = U64_MAX; > | ^~~~~~~ I see. I suppose it should be ~(dma_addr_t)0 . I don't see a DMA_ADDR_MAX.