Re: [PATCH] spapr: Handle HPT allocation failure in nested guest

2020-09-13 Thread David Gibson
On Fri, Sep 11, 2020 at 01:31:23AM -0300, Fabiano Rosas wrote: > The nested KVM code does not yet support HPT guests. Calling the > KVM_CAP_PPC_ALLOC_HTAB ioctl currently leads to KVM setting the guest > as HPT and erroneously executing code in L1 that should only run in > hypervisor mode, leading

Re: [PATCH] spapr: Handle HPT allocation failure in nested guest

2020-09-11 Thread Fabiano Rosas
Fabiano Rosas writes: > The nested KVM code does not yet support HPT guests. Calling the > KVM_CAP_PPC_ALLOC_HTAB ioctl currently leads to KVM setting the guest > as HPT and erroneously executing code in L1 that should only run in > hypervisor mode, leading to an exception in the L1 vcpu thread w

Re: [PATCH] spapr: Handle HPT allocation failure in nested guest

2020-09-11 Thread Greg Kurz
On Fri, 11 Sep 2020 01:31:23 -0300 Fabiano Rosas wrote: > The nested KVM code does not yet support HPT guests. Calling the > KVM_CAP_PPC_ALLOC_HTAB ioctl currently leads to KVM setting the guest > as HPT and erroneously executing code in L1 that should only run in > hypervisor mode, leading to an