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From: Naresh GS <1888971@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1888971] [NEW] SMI trigger causes hang with multiple cores
Date: Sun, 26 Jul 2020 03:57:51 -0000	[thread overview]
Message-ID: <159573587135.29737.8295812528041177661.malonedeb@chaenomeles.canonical.com> (raw)

Public bug reported:

When using qemu , SMI trigger causes hang/reboot under following
conditions:

1. No KVM but there are more than 1 threads (-smp > 1)
2. When using KVM.

Info:
qemu-system-x86_64 --version
QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.29)
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

SMI trigger was done by writing 0x00 in IO port 0xB2.

Command:
No failure in SMI trigger when using the below command:
qemu-system-x86_64 -M pc-q35-bionic -smp 1 -bios build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee 1.txt

Hang/resets with below commands:
qemu-system-x86_64 -M pc-q35-bionic -smp 2 -bios build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee 1.txt

sudo qemu-system-x86_64 -M pc-q35-bionic,accel=kvm -smp 1 -bios
build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee 1.txt

** Affects: qemu
     Importance: Undecided
         Status: New

** Description changed:

- When using qemu , SMI trigger causes hand/reboot under following
+ When using qemu , SMI trigger causes hang/reboot under following
  conditions:
  
  1. No KVM but there are more than 1 threads (-smp > 1)
  2. When using KVM.
  
  Info:
  qemu-system-x86_64 --version
  QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.29)
  Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
  
  SMI trigger was done by writing 0x00 in IO port 0xB2.

** Description changed:

  When using qemu , SMI trigger causes hang/reboot under following
  conditions:
  
  1. No KVM but there are more than 1 threads (-smp > 1)
  2. When using KVM.
  
  Info:
  qemu-system-x86_64 --version
  QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.29)
  Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
  
  SMI trigger was done by writing 0x00 in IO port 0xB2.
+ 
+ Command:
+ No failure in SMI trigger when using the below command:
+ qemu-system-x86_64 -M pc-q35-bionic -smp 1 -bios build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee 1.txt
+ 
+ Hang/resets with below commands:
+ qemu-system-x86_64 -M pc-q35-bionic -smp 2 -bios build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee 1.txt
+ 
+ sudo qemu-system-x86_64 -M pc-q35-bionic,accel=kvm -smp 1 -bios
+ build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee 1.txt

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1888971

Title:
  SMI trigger causes hang with multiple cores

Status in QEMU:
  New

Bug description:
  When using qemu , SMI trigger causes hang/reboot under following
  conditions:

  1. No KVM but there are more than 1 threads (-smp > 1)
  2. When using KVM.

  Info:
  qemu-system-x86_64 --version
  QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.29)
  Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

  SMI trigger was done by writing 0x00 in IO port 0xB2.

  Command:
  No failure in SMI trigger when using the below command:
  qemu-system-x86_64 -M pc-q35-bionic -smp 1 -bios build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee 1.txt

  Hang/resets with below commands:
  qemu-system-x86_64 -M pc-q35-bionic -smp 2 -bios build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee 1.txt

  sudo qemu-system-x86_64 -M pc-q35-bionic,accel=kvm -smp 1 -bios
  build/coreboot.rom  -serial stdio -hda ../linux.img  -m 2048 | tee
  1.txt

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1888971/+subscriptions


             reply	other threads:[~2020-07-26  4:11 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-26  3:57 Naresh GS [this message]
2020-07-27 10:27 ` [Bug 1888971] Re: SMI trigger causes hang with multiple cores Laszlo Ersek (Red Hat)
2020-07-31  6:32 ` Naresh GS
2020-07-31  9:44 ` Laszlo Ersek (Red Hat)
2020-08-12 11:35 ` Laszlo Ersek (Red Hat)

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