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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen-unstable bisection] complete test-armhf-armhf-libvirt
branch xen-unstable xenbranch xen-unstable job test-armhf-armhf-libvirt testid guest-start/debian.repeat Tree: libvirt git://xenbits.xen.org/libvirt.git Tree: libvirt_keycodemapdb https://gitlab.com/keycodemap/keycodemapdb.git Tree: linux git://xenbits.xen.org/linux-pvops.git Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git Tree: qemuu git://xenbits.xen.org/qemu-xen.git Tree: xen git://xenbits.xen.org/xen.git *** Found and reproduced problem changeset *** Bug is in tree: xen git://xenbits.xen.org/xen.git Bug introduced: 9617d5f9c19d1d157629e1e436791509526e0ce5 Bug not present: 5c3c410bd2ea8d2cc520e8e8f83ad143c9c5cff7 Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/161061/ commit 9617d5f9c19d1d157629e1e436791509526e0ce5 Author: Julien Grall <jgrall@xxxxxxxxxx> Date: Sat Feb 20 17:54:13 2021 +0000 xen/arm: mm: flush_page_to_ram() only need to clean to PoC At the moment, flush_page_to_ram() is both cleaning and invalidate to PoC the page. The goal of flush_page_to_ram() is to prevent corruption when the guest has disabled the cache (the cache line may be dirty) and the guest to read previous content. Per this definition, the invalidating the line is not necessary. So invalidating the cache is unnecessary. In fact, it may be counter- productive as the line may be (speculatively) accessed a bit after. So this will incurr an expensive access to the memory. More generally, we should avoid interferring too much with cache. Therefore, flush_page_to_ram() is updated to only clean to PoC the page. The performance impact of this change will depend on your workload/processor. Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx> Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx> Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> For bisection revision-tuple graph see: http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable/test-armhf-armhf-libvirt.guest-start--debian.repeat.html Revision IDs in each graph node refer, respectively, to the Trees above. ---------------------------------------- Running cs-bisection-step --graph-out=/home/logs/results/bisect/xen-unstable/test-armhf-armhf-libvirt.guest-start--debian.repeat --summary-out=tmp/161061.bisection-summary --basis-template=160646 --blessings=real,real-bisect,real-retry xen-unstable test-armhf-armhf-libvirt guest-start/debian.repeat Searching for failure / basis pass: 160960 fail [host=arndale-westfield] / 160820 [host=cubietruck-gleizes] 160796 [host=cubietruck-picasso] 160758 [host=arndale-metrocentre] 160646 [host=cubietruck-braque] 160630 ok. Failure / basis pass flights: 160960 / 160630 Tree: libvirt git://xenbits.xen.org/libvirt.git Tree: libvirt_keycodemapdb https://gitlab.com/keycodemap/keycodemapdb.git Tree: linux git://xenbits.xen.org/linux-pvops.git Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git Tree: qemuu git://xenbits.xen.org/qemu-xen.git Tree: xen git://xenbits.xen.org/xen.git Latest 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 935d501ccbf5b8c4db1f6d0730a4a4c998e9e76a Basis pass 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 90629587e16e2efdb61da77f25c25fba3c4a5fd7 Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/libvirt.git#2c846fa6bcc11929c9fb857a22430fb9945654ad-2c846fa6bcc11929c9fb857a22430fb9945654ad https://gitlab.com/keycodemap/keycodemapdb.git#27acf0ef828bf719b2053ba398b195829413dbdd-27acf0ef828bf719b2053ba398b195829413dbdd git://xenbits.xen.org/linux-pvops.git#a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9-a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0\ dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen.git#7ea428895af2840d85c524f0bd11a38aac308308-7ea428895af2840d85c524f0bd11a38aac308308 git://xenbits.xen.org/xen.git#90629587e16e2efdb61da77f25c25fba3c4a5fd7-935d501ccbf5b8c4db1f6d0730a4a4c998e9e76a Loaded 5001 nodes in revision graph Searching for test results: 160581 [host=arndale-metrocentre] 160630 pass 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 90629587e16e2efdb61da77f25c25fba3c4a5fd7 160646 [host=cubietruck-braque] 160733 [host=arndale-metrocentre] 160745 [host=arndale-metrocentre] 160758 [host=arndale-metrocentre] 160776 [host=cubietruck-picasso] 160796 [host=cubietruck-picasso] 160820 [host=cubietruck-gleizes] 160850 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 025eacc13f6147ffa99da5ecee4ed96e7fe8e887 160878 blocked 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 935d501ccbf5b8c4db1f6d0730a4a4c998e9e76a 160912 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 935d501ccbf5b8c4db1f6d0730a4a4c998e9e76a 160970 pass 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 90629587e16e2efdb61da77f25c25fba3c4a5fd7 160988 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 935d501ccbf5b8c4db1f6d0730a4a4c998e9e76a 161002 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 06d1f7a278ddf4344efbb28c3360901b5a79ab75 161024 pass 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 f36179726847a08418a0b4f9c319b24ecb60fe3a 161032 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 e650311d4ebfd5bdff1f689b237f790ac05e1cab 160960 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 935d501ccbf5b8c4db1f6d0730a4a4c998e9e76a 161034 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 9617d5f9c19d1d157629e1e436791509526e0ce5 161039 pass 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 5c3c410bd2ea8d2cc520e8e8f83ad143c9c5cff7 161042 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 9617d5f9c19d1d157629e1e436791509526e0ce5 161046 pass 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 5c3c410bd2ea8d2cc520e8e8f83ad143c9c5cff7 161053 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 9617d5f9c19d1d157629e1e436791509526e0ce5 161056 pass 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 5c3c410bd2ea8d2cc520e8e8f83ad143c9c5cff7 161061 fail 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 9617d5f9c19d1d157629e1e436791509526e0ce5 Searching for interesting versions Result found: flight 160630 (pass), for basis pass For basis failure, parent search stopping at 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 5c3c410bd2ea8d2cc520e8e8f83ad143c9c5cff7, results HASH(0x55a32b415dc8) HASH(0x55a32b3ffd80) HASH(0x55a32b400c80) For basis failure, parent search stopping at 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1db\ affe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 f36179726847a08418a0b4f9c319b24ecb60fe3a, results HASH(0x55a32b410830) For basis failure, parent search stopping at 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 90629587e16e2efdb61da77f25c25fba3c4a5fd7, results HASH(0x55a32b40\ 1428) HASH(0x55a32b407a68) Result found: flight 160850 (fail), for basis failure (at ancestor ~234) Repro found: flight 160970 (pass), for basis pass Repro found: flight 160988 (fail), for basis failure 0 revisions at 2c846fa6bcc11929c9fb857a22430fb9945654ad 27acf0ef828bf719b2053ba398b195829413dbdd a6c5dd1dbaffe4cc398d8454546ba9246b9a95c9 c530a75c1e6a472b0eb9558310b518f0dfcd8860 7ea428895af2840d85c524f0bd11a38aac308308 5c3c410bd2ea8d2cc520e8e8f83ad143c9c5cff7 No revisions left to test, checking graph state. Result found: flight 161039 (pass), for last pass Result found: flight 161042 (fail), for first failure Repro found: flight 161046 (pass), for last pass Repro found: flight 161053 (fail), for first failure Repro found: flight 161056 (pass), for last pass Repro found: flight 161061 (fail), for first failure *** Found and reproduced problem changeset *** Bug is in tree: xen git://xenbits.xen.org/xen.git Bug introduced: 9617d5f9c19d1d157629e1e436791509526e0ce5 Bug not present: 5c3c410bd2ea8d2cc520e8e8f83ad143c9c5cff7 Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/161061/ commit 9617d5f9c19d1d157629e1e436791509526e0ce5 Author: Julien Grall <jgrall@xxxxxxxxxx> Date: Sat Feb 20 17:54:13 2021 +0000 xen/arm: mm: flush_page_to_ram() only need to clean to PoC At the moment, flush_page_to_ram() is both cleaning and invalidate to PoC the page. The goal of flush_page_to_ram() is to prevent corruption when the guest has disabled the cache (the cache line may be dirty) and the guest to read previous content. Per this definition, the invalidating the line is not necessary. So invalidating the cache is unnecessary. In fact, it may be counter- productive as the line may be (speculatively) accessed a bit after. So this will incurr an expensive access to the memory. More generally, we should avoid interferring too much with cache. Therefore, flush_page_to_ram() is updated to only clean to PoC the page. The performance impact of this change will depend on your workload/processor. Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx> Reviewed-by: Bertrand Marquis <bertrand.marquis@xxxxxxx> Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> Revision graph left in /home/logs/results/bisect/xen-unstable/test-armhf-armhf-libvirt.guest-start--debian.repeat.{dot,ps,png,html,svg}. ---------------------------------------- 161061: tolerable FAIL flight 161061 xen-unstable real-bisect [real] http://logs.test-lab.xenproject.org/osstest/logs/161061/ Failures :-/ but no regressions. Tests which did not succeed, including tests which could not be run: test-armhf-armhf-libvirt 16 saverestore-support-check fail baseline untested test-armhf-armhf-libvirt 18 guest-start/debian.repeat fail baseline untested test-armhf-armhf-libvirt 15 migrate-support-check fail never pass jobs: build-armhf-libvirt pass test-armhf-armhf-libvirt fail ------------------------------------------------------------ sg-report-flight on osstest.test-lab.xenproject.org logs: /home/logs/logs images: /home/logs/images Logs, config files, etc. are available at http://logs.test-lab.xenproject.org/osstest/logs Explanation of these reports, and of osstest in general, is at http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master Test harness code can be found at http://xenbits.xen.org/gitweb?p=osstest.git;a=summary
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