Seems ok now. On Fri, 22 May 2020, Thomas Huth wrote:
> Can you still reproduce this issue with the latest version of QEMU > (currently 5.0)? > > ** Changed in: qemu > Status: New => Incomplete > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1693649 > > Title: > x86 pause misbehaves with -cpu haswell > > Status in QEMU: > Incomplete > > Bug description: > Using qemu-2.9.0 > > When booting NetBSD using '-cpu haswell -smp 4', the system fails to > initialize the additional CPUs. It appears as though the "application > processor" enters routine x86_pause() but never returns. > > x86_pause() is simply two assembler instructions: 'pause; ret;' > > Replacing the routine with 'nop; nop; ret;' allows the system to > proceed, of course without the benefit of the pause instruction on > spin-loops! > > Additionally, booting with '-cpu phenom -smp 4' also works, although > the system does seem confused about the type of CPU being used. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/qemu/+bug/1693649/+subscriptions > > !DSPAM:5ec7625658281532840571! > > +--------------------+--------------------------+-----------------------+ | Paul Goyette | PGP Key fingerprint: | E-mail addresses: | | (Retired) | FA29 0E3B 35AF E8AE 6651 | p...@whooppee.com | | Software Developer | 0786 F758 55DE 53BA 7731 | pgoye...@netbsd.org | +--------------------+--------------------------+-----------------------+ -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1693649 Title: x86 pause misbehaves with -cpu haswell Status in QEMU: Incomplete Bug description: Using qemu-2.9.0 When booting NetBSD using '-cpu haswell -smp 4', the system fails to initialize the additional CPUs. It appears as though the "application processor" enters routine x86_pause() but never returns. x86_pause() is simply two assembler instructions: 'pause; ret;' Replacing the routine with 'nop; nop; ret;' allows the system to proceed, of course without the benefit of the pause instruction on spin-loops! Additionally, booting with '-cpu phenom -smp 4' also works, although the system does seem confused about the type of CPU being used. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1693649/+subscriptions
