[Bug 1888971] Re: SMI trigger causes hang with multiple cores

[Laszlo Ersek (Red Hat)]

Inactive for ~two weeks, closing.

** Changed in: qemu
       Status: New => Incomplete

** Changed in: qemu
       Status: Incomplete => Invalid

-- 
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:
  Invalid

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