On Mon, Nov 11, 2013 at 07:29:47PM +0530, Aneesh Kumar K.V wrote: > From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx> > > We don't use PACATOC for PR. Avoid updating HOST_R2 with PR > KVM mode when both HV and PR are enabled in the kernel. Without this we > get the below crash > > (qemu) > Unable to handle kernel paging request for data at address 0xffffffffffff8310 > Faulting instruction address: 0xc00000000001d5a4 > cpu 0x2: Vector: 300 (Data Access) at [c0000001dc53aef0] > pc: c00000000001d5a4: .vtime_delta.isra.1+0x34/0x1d0 > lr: c00000000001d760: .vtime_account_system+0x20/0x60 > sp: c0000001dc53b170 > msr: 8000000000009032 > dar: ffffffffffff8310 > dsisr: 40000000 > current = 0xc0000001d76c62d0 > paca = 0xc00000000fef1100 softe: 0 irq_happened: 0x01 > pid = 4472, comm = qemu-system-ppc > enter ? for help > [c0000001dc53b200] c00000000001d760 .vtime_account_system+0x20/0x60 > [c0000001dc53b290] c00000000008d050 .kvmppc_handle_exit_pr+0x60/0xa50 > [c0000001dc53b340] c00000000008f51c kvm_start_lightweight+0xb4/0xc4 > [c0000001dc53b510] c00000000008cdf0 .kvmppc_vcpu_run_pr+0x150/0x2e0 > [c0000001dc53b9e0] c00000000008341c .kvmppc_vcpu_run+0x2c/0x40 > [c0000001dc53ba50] c000000000080af4 .kvm_arch_vcpu_ioctl_run+0x54/0x1b0 > [c0000001dc53bae0] c00000000007b4c8 .kvm_vcpu_ioctl+0x478/0x730 > [c0000001dc53bca0] c0000000002140cc .do_vfs_ioctl+0x4ac/0x770 > [c0000001dc53bd80] c0000000002143e8 .SyS_ioctl+0x58/0xb0 > [c0000001dc53be30] c000000000009e58 syscall_exit+0x0/0x98 > --- Exception: c00 (System Call) at 00001fffff960160 > SP (1ffffecbe3c0) is in userspace > > These changes were originally part of > http://mid.gmane.org/20130806042205.GR19254@xxxxxxxxxxxxxxxxxxx > > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx> Acked-by: Paul Mackerras <paulus@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
