On Thu, 23 May 2019 16:27:15 +1000 David Gibson <david@xxxxxxxxxxxxxxxxxxxxx> wrote: > On Thu, May 23, 2019 at 08:01:23AM +0200, Greg Kurz wrote: > > On Thu, 23 May 2019 09:30:43 +1000 > > David Gibson <david@xxxxxxxxxxxxxxxxxxxxx> wrote: > > > > > On Mon, May 20, 2019 at 09:15:11AM +0200, Cédric Le Goater wrote: > > > > Hello, > > > > > > > > Here are a couple of fixes for issues in the XIVE KVM device when > > > > testing the limits : RAM size and number of vCPUS. > > > > > > How serious are the problems these patches fix? I'm wondering if I > > > need to make a backport for RHEL8.1. > > > > > > > Patch 2/3 fixes a QEMU error when hot-unplugging a vCPU: > > > > qemu-system-ppc64: KVM_SET_DEVICE_ATTR failed: Group 4 attr 0x0000000000000046: Invalid argument > > > > > > Patch 3/3 fixes an issue where the guest freezes at some point when doing > > vCPU hot-plug/unplug in a loop. > > Oh.. weird. It's not clear to me how it would do that. > Cedric provided a better description in some other mail: guest with 1024 vCPUs. > > Both issues have a BZ at IBM. They can be mirrored to RH if needed. > > That would be helpful, thanks. > Ok, I'll take care of that. > > > > > > > > > > > > > Based on 5.2-rc1. > > > > > > > > Available on GitHub: > > > > > > > > https://github.com/legoater/linux/commits/xive-5.2 > > > > > > > > Thanks, > > > > > > > > C. > > > > > > > > Cédric Le Goater (3): > > > > KVM: PPC: Book3S HV: XIVE: clear file mapping when device is released > > > > KVM: PPC: Book3S HV: XIVE: do not test the EQ flag validity when > > > > reseting > > > > KVM: PPC: Book3S HV: XIVE: fix the enforced limit on the vCPU > > > > identifier > > > > > > > > arch/powerpc/kvm/book3s_xive_native.c | 46 ++++++++++++++++----------- > > > > 1 file changed, 27 insertions(+), 19 deletions(-) > > > > > > > > > > > >
Attachment:
pgpXwi5cIl4b0.pgp
Description: OpenPGP digital signature
