On intel_idle function issue.
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Triaged
|
Medium
|
Unassigned |
Bug Description
Below is result of perf report:
.......
│ mfence ▒
│ mov %gs:0x14204,%rax ▒
│ clflus -0x3ff8(%rax) ▒
│ mfence ▒
│ 90: xor %edx,%edx ▒
│ mov %gs:0x14204,%rsi ▒
│ mov %rdx,%rcx ▒
│ lea -0x3ff8(%rsi),%rax ▒
│ monito %rax,%rcx,%rdx ▒
20,00 │ mov -0x3ff8(%rsi),%rax ▒
│ test $0x8,%al ▒
│ ↓ jne be ▒
│ mov $0x1,%ecx ▒
│ mov %r12,%rax ▒
│ mwait %rax,%rcx ▒
60,00 │ be: mov %gs:0x14204,%rax ▒
20,00 │ lock andb $0xdf,-0x3ff6(%rax) ▒
│ mfence ▒
│ mov -0x3ff8(%rax),%rax ▒
│ test $0x8,%al ▒
│ ↓ je e8 ▒
│ andl $0x7fffffff,
│ e8: test %ebx,0xa36972(%rip) ▒
│ ↓ jne f7 ▒
│ xor %edi,%edi
.......
I have one patch wich try to solve this issue .
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-
ProcVersionSign
Uname: Linux 4.4.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CurrentDesktop: Unity
Date: Sun Jul 3 12:49:40 2016
InstallationDate: Installed on 2016-04-29 (64 days ago)
InstallationMedia: Ubuntu-Studio 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IwConfig:
lo no wireless extensions.
enp1s0 no wireless extensions.
MachineType: Olidata S.p.A. ALABAMA
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.157.1
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/08/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: S0101
dmi.board.
dmi.board.name: To be filled by O.E.M.
dmi.board.vendor: To be filled by O.E.M.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: ALABAMA
dmi.product.
dmi.sys.vendor: Olidata S.p.A.
tags: | added: patch |
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