https://lists.ubuntu.com/archives/kernel-team/2021-August/123672.html
** Description changed:
[Impact]
Our Bionic 4.15 kernel lacks of movups/movupd emulation support.
With the following commit added into the emulator test in
ubuntu_kvm_unit_tests:
commit 8726f9771911d6749dbd36ab2fc70f0f25e2b1a9
Author: Jacob Xu <jacob...@google.com>
Date: Wed Apr 21 16:12:57 2021 -0700
x86: add movups/movupd sse testcases to emulator.c
Here we add movups/movupd tests corresponding to functionality
introduced in commit 29916968c486 ("kvm: Add emulation for
movups/movupd").
Signed-off-by: Jacob Xu <jacob...@google.com>
Message-Id: <20210421231258.2583654-1-jacob...@google.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
It will cause the emulator test in ubuntu_kvm_unit_tests fail with timeout:
+ ...
PASS: movdqu (read)
PASS: movdqu (write)
PASS: movaps (read)
PASS: movaps (write)
PASS: movapd (read)
PASS: movapd (write)
KVM internal error. Suberror: 1
emulation failure
RAX=000000000000000a RBX=ffffffffffffe000 RCX=00000000000003fd
RDX=00000000000003f8
RSI=0000000000419991 RDI=0000000000419991 RBP=000000000051b490
RSP=000000000051b470
R8 =000000000000000a R9 =00000000000003f8 R10=000000000000000d
R11=0000000000000000
R12=ffffffffffffe000 R13=1111111111111111 R14=ffffffffffffd000
R15=3333333333333333
RIP=0000000000400a1f RFL=00010006 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
CS =0008 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
FS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
GS =0010 000000000051a510 ffffffff 00c09300 DPL=0 DS [-WA]
LDT=0000 0000000000000000 0000ffff 00008200 DPL=0 LDT
TR =0080 000000000041207a 0000ffff 00008b00 DPL=0 TSS64-busy
GDT= 000000000041100a 0000106f
IDT= 0000000000410000 00000fff
CR0=80010011 CR2=0000000000000000 CR3=0000000001007000 CR4=00000220
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000500
Code=00 c7 45 e8 03 00 00 00 c7 45 ec 04 00 00 00 66 0f 6f 45 e0 <0f> 11 03
48 89 de 48 8d 7d e0 e8 e5 f9 ff ff 0f b6 f8 be a1 8f 41 00 b8 00 00 00 00 e8 07
qemu-system-x86_64: terminating on signal 15 from pid 15758 (timeout)
FAIL emulator (timeout; duration=90s)
[Fix]
* 29916968c48691 kvm: Add emulation for movups/movupd
This patch can be cherry-picked into Bionic.
+
It can fix our test failure plus, as mentioned in the commit message,
emulation failures with openbsd as guest and with Windows 10 with
intel HD graphics pass through.
-
- I didn't see any other patch that claims to be a fix of this one in
- upstream tree.
[Test]
Test kernel can be found here:
https://people.canonical.com/~phlin/kernel/lp-1932966-kvm-emulator/
Run the emulator test from ubuntu_kvm_unit_tests, with this patch
applied it will pass without any issue:
+ ...
PASS: movdqu (read)
PASS: movdqu (write)
PASS: movaps (read)
PASS: movaps (write)
PASS: movapd (read)
PASS: movapd (write)
PASS: movups (read)
PASS: movups (write)
PASS: movupd (read)
PASS: movupd (write)
PASS: movups unaligned
PASS: movupd unaligned
PASS: unaligned movaps exception
PASS: movups unaligned crosspage
PASS: movups crosspage exception
PASS: movq (mmx, read)
PASS: movq (mmx, write)
PASS: movb $imm, 0(%rip)
PASS: shld (cl)
PASS: shrd (cl)
PASS: mov null, %ss
PASS: mov null, %ss (with ss.rpl != cpl)
PASS: Test ret/iret with a nullified segment
PASS: ltr
PASS: cmovnel
SKIP: skipping register-only tests, use kvm.force_emulation_prefix=1 to
enable
PASS: push16
PASS: cross-page mmio read
PASS: cross-page mmio write
PASS: string_io_mmio
PASS: jump to non-canonical address
SKIP: illegal movbe
SUMMARY: 135 tests, 2 skipped
PASS emulator (135 tests, 2 skipped)
[Where problems could occur]
- The problem I think of for the moment is that we might see other
- failures when using this in the future.
+ I didn't see any other patch that claims to be a fix of this one in
+ the upstream tree. The problem I think of for the moment is that we
+ might see other failures when using this in the future.
[Original Bug Report]
Found this on B/KVM, current cycle (sru-20210531):
18:27:11 DEBUG| [stdout] PASS: movapd (write)^M
18:27:11 DEBUG| [stderr] KVM internal error. Suberror: 1
18:27:11 DEBUG| [stderr] emulation failure
18:27:11 DEBUG| [stderr] RAX=000000000000000a RBX=ffffffffffffe000
RCX=00000000000003fd RDX=00000000000003f8
18:27:11 DEBUG| [stderr] RSI=0000000000419991 RDI=0000000000419991
RBP=000000000051b440 RSP=000000000051b420
18:27:11 DEBUG| [stderr] R8 =000000000000000a R9 =00000000000003f8
R10=000000000000000d R11=0000000000000000
18:27:11 DEBUG| [stderr] R12=ffffffffffffe000 R13=1111111111111111
R14=ffffffffffffd000 R15=3333333333333333
18:27:11 DEBUG| [stderr] RIP=0000000000400a0c RFL=00010006 [-----P-] CPL=0
II=0 A20=1 SMM=0 HLT=0
18:27:11 DEBUG| [stderr] ES =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] CS =0008 0000000000000000 ffffffff 00a09b00 DPL=0
CS64 [-RA]
18:27:11 DEBUG| [stderr] SS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] DS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] FS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] GS =0010 000000000051a4d0 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] LDT=0000 0000000000000000 0000ffff 00008200 DPL=0 LDT
18:27:11 DEBUG| [stderr] TR =0080 000000000041207a 0000ffff 00008b00 DPL=0
TSS64-busy
18:27:11 DEBUG| [stderr] GDT= 000000000041100a 0000106f
18:27:11 DEBUG| [stderr] IDT= 0000000000410000 00000fff
18:27:11 DEBUG| [stderr] CR0=80010011 CR2=0000000000000000
CR3=0000000001007000 CR4=00000220
18:27:11 DEBUG| [stderr] DR0=0000000000000000 DR1=0000000000000000
DR2=0000000000000000 DR3=0000000000000000
18:27:11 DEBUG| [stderr] DR6=00000000ffff0ff0 DR7=0000000000000400
18:27:11 DEBUG| [stderr] EFER=0000000000000500
18:27:11 DEBUG| [stderr] Code=00 c7 45 e8 03 00 00 00 c7 45 ec 04 00 00 00 66
0f 6f 45 e0 <0f> 11 03 48 89 de 48 8d 7d e0 e8 f8 f9 ff ff 0f b6 f8 be a1 8f 41
00 b8 00 00 00 00 e8 05
18:28:40 DEBUG| [stderr] qemu-system-x86_64: terminating on signal 15 from
pid 13634 (timeout)
18:28:40 DEBUG| [stdout] FAIL emulator (timeout; duration=90s)
[...]
TestError: Test failed for emulator
18:28:40 ERROR| child process failed
18:28:40 DEBUG| Traceback (most recent call last):
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/parallel.py", line 25,
in fork_start
18:28:40 DEBUG| l()
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/job.py", line 505, in
<lambda>
18:28:40 DEBUG| l = lambda: test.runtest(self, url, tag, args, dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/test.py", line 125, in
runtest
18:28:40 DEBUG| job.sysinfo.log_after_each_iteration)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
913, in runtest
18:28:40 DEBUG| mytest._exec(args, dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
411, in _exec
18:28:40 DEBUG| _call_test_function(self.execute, *p_args, **p_dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
823, in _call_test_function
18:28:40 DEBUG| return func(*args, **dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
291, in execute
18:28:40 DEBUG| postprocess_profiled_run, args, dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
212, in _call_run_once
18:28:40 DEBUG| self.run_once(*args, **dargs)
18:28:40 DEBUG| File
"/home/ubuntu/autotest/client/tests/ubuntu_kvm_unit_tests/ubuntu_kvm_unit_tests.py",
line 82, in run_once
18:28:40 DEBUG| raise error.TestError("Test failed for
{}".format(test_name))
18:28:40 DEBUG| TestError: Test failed for emulator
18:28:41 INFO | ERROR ubuntu_kvm_unit_tests.emulator
ubuntu_kvm_unit_tests.emulator timestamp=1624040921 localtime=Jun 18
18:28:41 Test failed for emulator
18:28:41 INFO | END ERROR ubuntu_kvm_unit_tests.emulator
ubuntu_kvm_unit_tests.emulator timestamp=1624040921 localtime=Jun 18
18:28:41
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1932966
Title:
kvm_unit_tests: emulator test fails on 4.15 kernel, timeout
Status in ubuntu-kernel-tests:
In Progress
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
In Progress
Bug description:
[Impact]
Our Bionic 4.15 kernel lacks of movups/movupd emulation support.
With the following commit added into the emulator test in
ubuntu_kvm_unit_tests:
commit 8726f9771911d6749dbd36ab2fc70f0f25e2b1a9
Author: Jacob Xu <jacob...@google.com>
Date: Wed Apr 21 16:12:57 2021 -0700
x86: add movups/movupd sse testcases to emulator.c
Here we add movups/movupd tests corresponding to functionality
introduced in commit 29916968c486 ("kvm: Add emulation for
movups/movupd").
Signed-off-by: Jacob Xu <jacob...@google.com>
Message-Id: <20210421231258.2583654-1-jacob...@google.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
It will cause the emulator test in ubuntu_kvm_unit_tests fail with timeout:
...
PASS: movdqu (read)
PASS: movdqu (write)
PASS: movaps (read)
PASS: movaps (write)
PASS: movapd (read)
PASS: movapd (write)
KVM internal error. Suberror: 1
emulation failure
RAX=000000000000000a RBX=ffffffffffffe000 RCX=00000000000003fd
RDX=00000000000003f8
RSI=0000000000419991 RDI=0000000000419991 RBP=000000000051b490
RSP=000000000051b470
R8 =000000000000000a R9 =00000000000003f8 R10=000000000000000d
R11=0000000000000000
R12=ffffffffffffe000 R13=1111111111111111 R14=ffffffffffffd000
R15=3333333333333333
RIP=0000000000400a1f RFL=00010006 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
CS =0008 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
FS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
GS =0010 000000000051a510 ffffffff 00c09300 DPL=0 DS [-WA]
LDT=0000 0000000000000000 0000ffff 00008200 DPL=0 LDT
TR =0080 000000000041207a 0000ffff 00008b00 DPL=0 TSS64-busy
GDT= 000000000041100a 0000106f
IDT= 0000000000410000 00000fff
CR0=80010011 CR2=0000000000000000 CR3=0000000001007000 CR4=00000220
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000500
Code=00 c7 45 e8 03 00 00 00 c7 45 ec 04 00 00 00 66 0f 6f 45 e0 <0f> 11 03
48 89 de 48 8d 7d e0 e8 e5 f9 ff ff 0f b6 f8 be a1 8f 41 00 b8 00 00 00 00 e8 07
qemu-system-x86_64: terminating on signal 15 from pid 15758 (timeout)
FAIL emulator (timeout; duration=90s)
[Fix]
* 29916968c48691 kvm: Add emulation for movups/movupd
This patch can be cherry-picked into Bionic.
It can fix our test failure plus, as mentioned in the commit message,
emulation failures with openbsd as guest and with Windows 10 with
intel HD graphics pass through.
[Test]
Test kernel can be found here:
https://people.canonical.com/~phlin/kernel/lp-1932966-kvm-emulator/
Run the emulator test from ubuntu_kvm_unit_tests, with this patch
applied it will pass without any issue:
...
PASS: movdqu (read)
PASS: movdqu (write)
PASS: movaps (read)
PASS: movaps (write)
PASS: movapd (read)
PASS: movapd (write)
PASS: movups (read)
PASS: movups (write)
PASS: movupd (read)
PASS: movupd (write)
PASS: movups unaligned
PASS: movupd unaligned
PASS: unaligned movaps exception
PASS: movups unaligned crosspage
PASS: movups crosspage exception
PASS: movq (mmx, read)
PASS: movq (mmx, write)
PASS: movb $imm, 0(%rip)
PASS: shld (cl)
PASS: shrd (cl)
PASS: mov null, %ss
PASS: mov null, %ss (with ss.rpl != cpl)
PASS: Test ret/iret with a nullified segment
PASS: ltr
PASS: cmovnel
SKIP: skipping register-only tests, use kvm.force_emulation_prefix=1 to
enable
PASS: push16
PASS: cross-page mmio read
PASS: cross-page mmio write
PASS: string_io_mmio
PASS: jump to non-canonical address
SKIP: illegal movbe
SUMMARY: 135 tests, 2 skipped
PASS emulator (135 tests, 2 skipped)
[Where problems could occur]
I didn't see any other patch that claims to be a fix of this one in
the upstream tree. The problem I think of for the moment is that we
might see other failures when using this in the future.
[Original Bug Report]
Found this on B/KVM, current cycle (sru-20210531):
18:27:11 DEBUG| [stdout] PASS: movapd (write)^M
18:27:11 DEBUG| [stderr] KVM internal error. Suberror: 1
18:27:11 DEBUG| [stderr] emulation failure
18:27:11 DEBUG| [stderr] RAX=000000000000000a RBX=ffffffffffffe000
RCX=00000000000003fd RDX=00000000000003f8
18:27:11 DEBUG| [stderr] RSI=0000000000419991 RDI=0000000000419991
RBP=000000000051b440 RSP=000000000051b420
18:27:11 DEBUG| [stderr] R8 =000000000000000a R9 =00000000000003f8
R10=000000000000000d R11=0000000000000000
18:27:11 DEBUG| [stderr] R12=ffffffffffffe000 R13=1111111111111111
R14=ffffffffffffd000 R15=3333333333333333
18:27:11 DEBUG| [stderr] RIP=0000000000400a0c RFL=00010006 [-----P-] CPL=0
II=0 A20=1 SMM=0 HLT=0
18:27:11 DEBUG| [stderr] ES =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] CS =0008 0000000000000000 ffffffff 00a09b00 DPL=0
CS64 [-RA]
18:27:11 DEBUG| [stderr] SS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] DS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] FS =0010 0000000000000000 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] GS =0010 000000000051a4d0 ffffffff 00c09300 DPL=0 DS
[-WA]
18:27:11 DEBUG| [stderr] LDT=0000 0000000000000000 0000ffff 00008200 DPL=0 LDT
18:27:11 DEBUG| [stderr] TR =0080 000000000041207a 0000ffff 00008b00 DPL=0
TSS64-busy
18:27:11 DEBUG| [stderr] GDT= 000000000041100a 0000106f
18:27:11 DEBUG| [stderr] IDT= 0000000000410000 00000fff
18:27:11 DEBUG| [stderr] CR0=80010011 CR2=0000000000000000
CR3=0000000001007000 CR4=00000220
18:27:11 DEBUG| [stderr] DR0=0000000000000000 DR1=0000000000000000
DR2=0000000000000000 DR3=0000000000000000
18:27:11 DEBUG| [stderr] DR6=00000000ffff0ff0 DR7=0000000000000400
18:27:11 DEBUG| [stderr] EFER=0000000000000500
18:27:11 DEBUG| [stderr] Code=00 c7 45 e8 03 00 00 00 c7 45 ec 04 00 00 00 66
0f 6f 45 e0 <0f> 11 03 48 89 de 48 8d 7d e0 e8 f8 f9 ff ff 0f b6 f8 be a1 8f 41
00 b8 00 00 00 00 e8 05
18:28:40 DEBUG| [stderr] qemu-system-x86_64: terminating on signal 15 from
pid 13634 (timeout)
18:28:40 DEBUG| [stdout] FAIL emulator (timeout; duration=90s)
[...]
TestError: Test failed for emulator
18:28:40 ERROR| child process failed
18:28:40 DEBUG| Traceback (most recent call last):
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/parallel.py", line 25,
in fork_start
18:28:40 DEBUG| l()
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/job.py", line 505, in
<lambda>
18:28:40 DEBUG| l = lambda: test.runtest(self, url, tag, args, dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/test.py", line 125, in
runtest
18:28:40 DEBUG| job.sysinfo.log_after_each_iteration)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
913, in runtest
18:28:40 DEBUG| mytest._exec(args, dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
411, in _exec
18:28:40 DEBUG| _call_test_function(self.execute, *p_args, **p_dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
823, in _call_test_function
18:28:40 DEBUG| return func(*args, **dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
291, in execute
18:28:40 DEBUG| postprocess_profiled_run, args, dargs)
18:28:40 DEBUG| File "/home/ubuntu/autotest/client/shared/test.py", line
212, in _call_run_once
18:28:40 DEBUG| self.run_once(*args, **dargs)
18:28:40 DEBUG| File
"/home/ubuntu/autotest/client/tests/ubuntu_kvm_unit_tests/ubuntu_kvm_unit_tests.py",
line 82, in run_once
18:28:40 DEBUG| raise error.TestError("Test failed for
{}".format(test_name))
18:28:40 DEBUG| TestError: Test failed for emulator
18:28:41 INFO | ERROR ubuntu_kvm_unit_tests.emulator
ubuntu_kvm_unit_tests.emulator timestamp=1624040921 localtime=Jun 18
18:28:41 Test failed for emulator
18:28:41 INFO | END ERROR ubuntu_kvm_unit_tests.emulator
ubuntu_kvm_unit_tests.emulator timestamp=1624040921 localtime=Jun 18
18:28:41
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1932966/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
