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. Both issues have a BZ at IBM. They can be mirrored to RH if needed. > > > > 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(-) > > >
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