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[142.68.80.239]) by smtp.gmail.com with ESMTPSA id k26-20020a05620a0b9a00b00789e2961225sm3808233qkh.61.2024.03.27.04.49.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Mar 2024 04:49:59 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1rpRn4-0051gL-Np; Wed, 27 Mar 2024 08:49:58 -0300 Date: Wed, 27 Mar 2024 08:49:58 -0300 From: Jason Gunthorpe To: Muhammad Usama Anjum , Joao Martins , Nicolin Chen Cc: kernel@collabora.com, iommu@lists.linux.dev, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Kevin Tian , Shuah Khan Subject: Re: [PATCH] selftests: iommu: add config needed for iommufd_fail_nth Message-ID: <20240327114958.GG8419@ziepe.ca> References: <20240325090048.1423908-1-usama.anjum@collabora.com> <31fcc276-acd6-4277-bd6c-4a871c7fb28a@collabora.com> <20240326150340.GE8419@ziepe.ca> <56cc8b9e-c1cf-4520-ba45-b1237e8b7b64@collabora.com> Precedence: bulk X-Mailing-List: linux-kselftest@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: <56cc8b9e-c1cf-4520-ba45-b1237e8b7b64@collabora.com> On Wed, Mar 27, 2024 at 03:14:25PM +0500, Muhammad Usama Anjum wrote: > On 3/26/24 8:03 PM, Jason Gunthorpe wrote: > > On Tue, Mar 26, 2024 at 06:09:34PM +0500, Muhammad Usama Anjum wrote: > >> Even after applying this config patch and following snippet (which doesn't > >> terminate the program if mmap doesn't allocate exactly as the hint), I'm > >> finding failed tests. > >> > >> @@ -1746,7 +1748,7 @@ FIXTURE_SETUP(iommufd_dirty_tracking) > >> assert((uintptr_t)self->buffer % HUGEPAGE_SIZE == 0); > >> vrc = mmap(self->buffer, variant->buffer_size, PROT_READ | PROT_WRITE, > >> mmap_flags, -1, 0); > >> - assert(vrc == self->buffer); > >> + assert(vrc == self->buffer);// ??? > >> > >> On x86: > >> # Totals: pass:176 fail:4 xfail:0 xpass:0 skip:0 error:0 > >> On ARM64: > >> # Totals: pass:166 fail:14 xfail:0 xpass:0 skip:0 error:0 > >> > >> The log files are attached. > > > > You probably don't have enough transparent huge pages available to the process > > > > echo 1024 > /proc/sys/vm/nr_hugepages > After making huge pages available, the iommufd test always passed on x86. > But there are still failures on arm64. I'm looking into the failures. Oh that is really strange. Joao? Nicolin? > # RUN iommufd_dirty_tracking.domain_dirty128k.get_dirty_bitmap ... > # iommufd_utils.h:374:get_dirty_bitmap:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty128k.get_dirty_bitmap > not ok 139 iommufd_dirty_tracking.domain_dirty128k.get_dirty_bitmap > # RUN iommufd_dirty_tracking.domain_dirty128k.get_dirty_bitmap_no_clear ... > # iommufd_utils.h:374:get_dirty_bitmap_no_clear:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap_no_clear: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty128k.get_dirty_bitmap_no_clear > not ok 140 iommufd_dirty_tracking.domain_dirty128k.get_dirty_bitmap_no_clear > # RUN iommufd_dirty_tracking.domain_dirty256k.get_dirty_bitmap ... > # iommufd_utils.h:374:get_dirty_bitmap:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty256k.get_dirty_bitmap > not ok 144 iommufd_dirty_tracking.domain_dirty256k.get_dirty_bitmap > # RUN iommufd_dirty_tracking.domain_dirty256k.get_dirty_bitmap_no_clear ... > # iommufd_utils.h:374:get_dirty_bitmap_no_clear:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap_no_clear: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty256k.get_dirty_bitmap_no_clear > not ok 145 iommufd_dirty_tracking.domain_dirty256k.get_dirty_bitmap_no_clear > # RUN iommufd_dirty_tracking.domain_dirty640k.get_dirty_bitmap ... > # iommufd_utils.h:374:get_dirty_bitmap:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty640k.get_dirty_bitmap > not ok 149 iommufd_dirty_tracking.domain_dirty640k.get_dirty_bitmap > # RUN iommufd_dirty_tracking.domain_dirty640k.get_dirty_bitmap_no_clear ... > # iommufd_utils.h:374:get_dirty_bitmap_no_clear:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap_no_clear: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty640k.get_dirty_bitmap_no_clear > not ok 150 iommufd_dirty_tracking.domain_dirty640k.get_dirty_bitmap_no_clear > # RUN iommufd_dirty_tracking.domain_dirty128M_huge.get_dirty_bitmap ... > # iommufd_utils.h:374:get_dirty_bitmap:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty128M_huge.get_dirty_bitmap > not ok 159 iommufd_dirty_tracking.domain_dirty128M_huge.get_dirty_bitmap > # RUN iommufd_dirty_tracking.domain_dirty128M_huge.get_dirty_bitmap_no_clear ... > # iommufd_utils.h:374:get_dirty_bitmap_no_clear:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap_no_clear: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty128M_huge.get_dirty_bitmap_no_clear > not ok 160 iommufd_dirty_tracking.domain_dirty128M_huge.get_dirty_bitmap_no_clear > # RUN iommufd_dirty_tracking.domain_dirty256M.get_dirty_bitmap ... > # iommufd_utils.h:374:get_dirty_bitmap:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty256M.get_dirty_bitmap > not ok 164 iommufd_dirty_tracking.domain_dirty256M.get_dirty_bitmap > # RUN iommufd_dirty_tracking.domain_dirty256M.get_dirty_bitmap_no_clear ... > # iommufd_utils.h:374:get_dirty_bitmap_no_clear:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap_no_clear: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty256M.get_dirty_bitmap_no_clear > not ok 165 iommufd_dirty_tracking.domain_dirty256M.get_dirty_bitmap_no_clear > # RUN iommufd_dirty_tracking.domain_dirty256M_huge.get_dirty_bitmap ... > # iommufd_utils.h:374:get_dirty_bitmap:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty256M_huge.get_dirty_bitmap > not ok 169 iommufd_dirty_tracking.domain_dirty256M_huge.get_dirty_bitmap > # RUN iommufd_dirty_tracking.domain_dirty256M_huge.get_dirty_bitmap_no_clear ... > # iommufd_utils.h:374:get_dirty_bitmap_no_clear:Expected j < npte (1) == test_bit(i + j, (unsigned long *)bitmap) (0) > # get_dirty_bitmap_no_clear: Test terminated by assertion > # FAIL iommufd_dirty_tracking.domain_dirty256M_huge.get_dirty_bitmap_no_clear > not ok 170 iommufd_dirty_tracking.domain_dirty256M_huge.get_dirty_bitmap_no_clear