Re: [PATCH v2] KVM: PPC: Book3S PR: only install valid SLBs during KVM_SET_SREGS

2017-10-13 Thread Paul Mackerras
On Mon, Oct 02, 2017 at 10:40:22AM +0200, Greg Kurz wrote: > Userland passes an array of 64 SLB descriptors to KVM_SET_SREGS, > some of which are valid (ie, SLB_ESID_V is set) and the rest are > likely all-zeroes (with QEMU at least). > > Each of them is then passed to kvmppc_mmu_book3s_64_slbmte(

Re: [PATCH v2] KVM: PPC: Book3S PR: only install valid SLBs during KVM_SET_SREGS

2017-10-13 Thread Greg Kurz
Ping ? On Mon, 02 Oct 2017 10:40:22 +0200 Greg Kurz wrote: > Userland passes an array of 64 SLB descriptors to KVM_SET_SREGS, > some of which are valid (ie, SLB_ESID_V is set) and the rest are > likely all-zeroes (with QEMU at least). > > Each of them is then passed to kvmppc_mmu_book3s_64_slbm

Re: [PATCH v2] KVM: PPC: Book3S PR: only install valid SLBs during KVM_SET_SREGS

2017-10-02 Thread David Gibson
On Mon, Oct 02, 2017 at 10:40:22AM +0200, Greg Kurz wrote: > Userland passes an array of 64 SLB descriptors to KVM_SET_SREGS, > some of which are valid (ie, SLB_ESID_V is set) and the rest are > likely all-zeroes (with QEMU at least). > > Each of them is then passed to kvmppc_mmu_book3s_64_slbmte(

[PATCH v2] KVM: PPC: Book3S PR: only install valid SLBs during KVM_SET_SREGS

2017-10-02 Thread Greg Kurz
Userland passes an array of 64 SLB descriptors to KVM_SET_SREGS, some of which are valid (ie, SLB_ESID_V is set) and the rest are likely all-zeroes (with QEMU at least). Each of them is then passed to kvmppc_mmu_book3s_64_slbmte(), which assumes to find the SLB index in the 3 lower bits of its rb