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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [xen-unstable bisection] complete test-amd64-amd64-qemuu-nested-intel
branch xen-unstable xenbranch xen-unstable job test-amd64-amd64-qemuu-nested-intel testid debian-hvm-install/l1/l2 Tree: linux git://xenbits.xen.org/linux-pvops.git Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.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: 40681735502648fdc45973382a440aa38f4ec800 Bug not present: c6527bc66b6dd7a8dadaebb1047c8e52c6c5793c Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/120243/ commit 40681735502648fdc45973382a440aa38f4ec800 Author: Roger Pau Monné <roger.pau@xxxxxxxxxx> Date: Tue Feb 27 14:10:33 2018 +0100 vmx/hap: optimize CR4 trapping There a bunch of bits in CR4 that should be allowed to be set directly by the guest without requiring Xen intervention, currently this is already done by passing through guest writes into the CR4 used when running in non-root mode, but taking an expensive vmexit in order to do so. xenalyze reports the following when running a PV guest in shim mode: CR_ACCESS 3885950 6.41s 17.04% 3957 cyc { 2361| 3378| 7920} cr4 3885940 6.41s 17.04% 3957 cyc { 2361| 3378| 7920} cr3 1 0.00s 0.00% 3480 cyc { 3480| 3480| 3480} *[ 0] 1 0.00s 0.00% 3480 cyc { 3480| 3480| 3480} cr0 7 0.00s 0.00% 7112 cyc { 3248| 5960|17480} clts 2 0.00s 0.00% 4588 cyc { 3456| 5720| 5720} After this change this turns into: CR_ACCESS 12 0.00s 0.00% 9972 cyc { 3680|11024|24032} cr4 2 0.00s 0.00% 17528 cyc {11024|24032|24032} cr3 1 0.00s 0.00% 3680 cyc { 3680| 3680| 3680} *[ 0] 1 0.00s 0.00% 3680 cyc { 3680| 3680| 3680} cr0 7 0.00s 0.00% 9209 cyc { 4184| 7848|17488} clts 2 0.00s 0.00% 8232 cyc { 5352|11112|11112} Note that this optimized trapping is currently only applied to guests running with HAP on Intel hardware. If using shadow paging more CR4 bits need to be unconditionally trapped, which makes this approach unlikely to yield any important performance improvements. Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> Acked-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx> For bisection revision-tuple graph see: http://logs.test-lab.xenproject.org/osstest/results/bisect/xen-unstable/test-amd64-amd64-qemuu-nested-intel.debian-hvm-install--l1--l2.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-amd64-amd64-qemuu-nested-intel.debian-hvm-install--l1--l2 --summary-out=tmp/120243.bisection-summary --basis-template=120037 --blessings=real,real-bisect xen-unstable test-amd64-amd64-qemuu-nested-intel debian-hvm-install/l1/l2 Searching for failure / basis pass: 120120 fail [host=fiano0] / 120037 [host=elbling0] 120001 [host=baroque0] 119970 [host=godello0] 119879 [host=elbling1] 119785 [host=godello1] 119713 [host=huxelrebe1] 119651 [host=huxelrebe0] 119592 [host=baroque1] 119521 [host=italia0] 119451 [host=chardonnay1] 119358 [host=chardonnay0] 119217 ok. Failure / basis pass flights: 120120 / 119217 (tree with no url: minios) (tree with no url: ovmf) (tree with no url: seabios) Tree: linux git://xenbits.xen.org/linux-pvops.git Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git Tree: qemuu git://xenbits.xen.org/qemu-xen.git Tree: xen git://xenbits.xen.org/xen.git Latest 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 85688075ccc22c12bd0fca2a2c269199938e104c Basis pass 7f3bd8db99746a60bcae1ec4059a4756d19b63c2 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 27196d4cc917d91b5b5daee50173565139ca9c9d Generating revisions with ./adhoc-revtuple-generator git://xenbits.xen.org/linux-pvops.git#7f3bd8db99746a60bcae1ec4059a4756d19b63c2-19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 git://xenbits.xen.org/osstest/linux-firmware.git#c530a75c1e6a472b0eb9558310b518f0dfcd8860-c530a75c1e6a472b0eb9558310b518f0dfcd8860 git://xenbits.xen.org/qemu-xen-traditional.git#c8ea0457495342c417c3dc033bba25148b279f60-c8ea0457495342c417c3dc033bba25148b279f60 git://xenbits.xen.org/qemu-xen.git#2b033e396f4fa0981bae1213cdacd15775655a97-2b033e396f4fa0981bae1213cdacd15775655a97 git://xenbits.xen.org/xen.git#27196d4cc917d91b5b5daee50173565139ca9c9d-85688075ccc22c12bd0fca2a2c269199938e104c Loaded 2001 nodes in revision graph Searching for test results: 119217 pass 7f3bd8db99746a60bcae1ec4059a4756d19b63c2 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 27196d4cc917d91b5b5daee50173565139ca9c9d 119358 [host=chardonnay0] 119451 [host=chardonnay1] 119521 [host=italia0] 119592 [host=baroque1] 119651 [host=huxelrebe0] 119713 [host=huxelrebe1] 119785 [host=godello1] 119970 [host=godello0] 119879 [host=elbling1] 120001 [host=baroque0] 120076 fail irrelevant 120037 [host=elbling0] 120161 pass 7f3bd8db99746a60bcae1ec4059a4756d19b63c2 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 27196d4cc917d91b5b5daee50173565139ca9c9d 120180 pass b7dc0f532107ec150ccaf381d926c07f6c3fa30d c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 da3d180d101cf81d085f0c6560d70acd16c934bd 120176 fail irrelevant 120120 fail 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 85688075ccc22c12bd0fca2a2c269199938e104c 120183 pass 90ca269463c55e99e3e91c667a821c6303f207ec c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 da3d180d101cf81d085f0c6560d70acd16c934bd 120186 fail 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 85688075ccc22c12bd0fca2a2c269199938e104c 120192 pass d947e0d510a328d30c399c99a41be558e35a4390 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 a823a5280f25ad19a751dd9a41044f556471e61a 120198 pass e4f0069c647e94d8070fc6f6ae1d753d14684c14 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 a823a5280f25ad19a751dd9a41044f556471e61a 120203 pass 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 16f878bf69ae0ef0dbb7e8c7cc59a86702c7885f 120206 pass 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 9d2f8f9c65d4da35437f50ed9e812a2c5ab313e2 120210 fail 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 dc96c65ed6d7ffd4c95487373df708d97443cf77 120212 pass 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 d05f1eb3741b85ef37d92d2971528aab2fe64820 120216 fail 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 40681735502648fdc45973382a440aa38f4ec800 120237 pass 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 c6527bc66b6dd7a8dadaebb1047c8e52c6c5793c 120218 pass 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 c6527bc66b6dd7a8dadaebb1047c8e52c6c5793c 120243 fail 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 40681735502648fdc45973382a440aa38f4ec800 120222 fail 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 40681735502648fdc45973382a440aa38f4ec800 120225 pass 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 c6527bc66b6dd7a8dadaebb1047c8e52c6c5793c 120231 fail 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 40681735502648fdc45973382a440aa38f4ec800 Searching for interesting versions Result found: flight 119217 (pass), for basis pass Result found: flight 120120 (fail), for basis failure Repro found: flight 120161 (pass), for basis pass Repro found: flight 120186 (fail), for basis failure 0 revisions at 19c04ca5b239e6e2277a5b381d1e79482ab9bbc5 c530a75c1e6a472b0eb9558310b518f0dfcd8860 c8ea0457495342c417c3dc033bba25148b279f60 2b033e396f4fa0981bae1213cdacd15775655a97 c6527bc66b6dd7a8dadaebb1047c8e52c6c5793c No revisions left to test, checking graph state. Result found: flight 120218 (pass), for last pass Result found: flight 120222 (fail), for first failure Repro found: flight 120225 (pass), for last pass Repro found: flight 120231 (fail), for first failure Repro found: flight 120237 (pass), for last pass Repro found: flight 120243 (fail), for first failure *** Found and reproduced problem changeset *** Bug is in tree: xen git://xenbits.xen.org/xen.git Bug introduced: 40681735502648fdc45973382a440aa38f4ec800 Bug not present: c6527bc66b6dd7a8dadaebb1047c8e52c6c5793c Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/120243/ commit 40681735502648fdc45973382a440aa38f4ec800 Author: Roger Pau Monné <roger.pau@xxxxxxxxxx> Date: Tue Feb 27 14:10:33 2018 +0100 vmx/hap: optimize CR4 trapping There a bunch of bits in CR4 that should be allowed to be set directly by the guest without requiring Xen intervention, currently this is already done by passing through guest writes into the CR4 used when running in non-root mode, but taking an expensive vmexit in order to do so. xenalyze reports the following when running a PV guest in shim mode: CR_ACCESS 3885950 6.41s 17.04% 3957 cyc { 2361| 3378| 7920} cr4 3885940 6.41s 17.04% 3957 cyc { 2361| 3378| 7920} cr3 1 0.00s 0.00% 3480 cyc { 3480| 3480| 3480} *[ 0] 1 0.00s 0.00% 3480 cyc { 3480| 3480| 3480} cr0 7 0.00s 0.00% 7112 cyc { 3248| 5960|17480} clts 2 0.00s 0.00% 4588 cyc { 3456| 5720| 5720} After this change this turns into: CR_ACCESS 12 0.00s 0.00% 9972 cyc { 3680|11024|24032} cr4 2 0.00s 0.00% 17528 cyc {11024|24032|24032} cr3 1 0.00s 0.00% 3680 cyc { 3680| 3680| 3680} *[ 0] 1 0.00s 0.00% 3680 cyc { 3680| 3680| 3680} cr0 7 0.00s 0.00% 9209 cyc { 4184| 7848|17488} clts 2 0.00s 0.00% 8232 cyc { 5352|11112|11112} Note that this optimized trapping is currently only applied to guests running with HAP on Intel hardware. If using shadow paging more CR4 bits need to be unconditionally trapped, which makes this approach unlikely to yield any important performance improvements. Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> Acked-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx> pnmtopng: 93 colors found Revision graph left in /home/logs/results/bisect/xen-unstable/test-amd64-amd64-qemuu-nested-intel.debian-hvm-install--l1--l2.{dot,ps,png,html,svg}. ---------------------------------------- 120243: tolerable ALL FAIL flight 120243 xen-unstable real-bisect [real] http://logs.test-lab.xenproject.org/osstest/logs/120243/ Failures :-/ but no regressions. Tests which did not succeed, including tests which could not be run: test-amd64-amd64-qemuu-nested-intel 17 debian-hvm-install/l1/l2 fail baseline untested jobs: test-amd64-amd64-qemuu-nested-intel 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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