search for: handle_valid

...uct kvm_run and return -EREMOTE. The trivial intercept reasons are handled in this patch: handle_noop() just does nothing for intercepts that don't require our support at all handle_stop() is called when a cpu enters stopped state, and it drops out to userland after updating our vcpu state handle_validity() faults in the cpu lowcore if needed, or passes the request to userland Acked-by: Martin Schwidefsky <schwidefsky at de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> Signed-off-by: Carsten Otte <cotte at de.ibm.com> --- arch/s390/kvm/Makefile...

...uct kvm_run and return -EREMOTE. The trivial intercept reasons are handled in this patch: handle_noop() just does nothing for intercepts that don't require our support at all handle_stop() is called when a cpu enters stopped state, and it drops out to userland after updating our vcpu state handle_validity() faults in the cpu lowcore if needed, or passes the request to userland Acked-by: Martin Schwidefsky <schwidefsky at de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com> Signed-off-by: Carsten Otte <cotte at de.ibm.com> --- arch/s390/kvm/Makefile...

...+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -2037,7 +2037,7 @@ static int kvmgt_rw_gpa(unsigned long handle, unsigned long gpa, struct kvmgt_guest_info *info; struct kvm *kvm; int idx, ret; - bool kthread = current->mm == NULL; + bool kthread = (current->flags & PF_KTHREAD); if (!handle_valid(handle)) return -ESRCH; -- 2.25.1

...eg == reg3) + break; + reg = reg + 1; + if (reg > 15) + reg = 0; + } while (1); + return 0; +} + +static intercept_handler_t instruction_handlers[256] = { + [0xb7] = handle_lctl, + [0xeb] = handle_lctg, +}; static int handle_noop(struct kvm_vcpu *vcpu) { @@ -57,10 +142,48 @@ static int handle_validity(struct kvm_vc return -ENOTSUPP; } +static int handle_instruction(struct kvm_vcpu *vcpu) +{ + intercept_handler_t handler = + instruction_handlers[vcpu->arch.sie_block->ipa >> 8]; + + vcpu->stat.exit_instruction++; + + if (!handler) + return -ENOTSUPP; + + return handler(vcp...

...int.action_bits & ACTION_STOP_ON_STOP) { + vcpu->arch.local_int.action_bits &= ~ACTION_STOP_ON_STOP; + VCPU_EVENT(vcpu, 3, "%s", "cpu stopped"); + rc = -ENOTSUPP; + } else + rc = 0; + spin_unlock_bh(&vcpu->arch.local_int.lock); + return rc; } static int handle_validity(struct kvm_vcpu *vcpu) Index: kvm/arch/s390/kvm/kvm-s390.c =================================================================== --- kvm.orig/arch/s390/kvm/kvm-s390.c +++ kvm/arch/s390/kvm/kvm-s390.c @@ -57,6 +57,12 @@ struct kvm_stats_debugfs_item debugfs_en { "instruction_chsc", VCPU...

This patch series introduces a backend for kvm to run on IBM System z machines that uses the mainframe's sie virtualization capability. This work runs 64bit guests on z800/z890/z900/z990/z9/z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git

This patch series introduces a backend for kvm to run on IBM System z machines that uses the mainframe's sie virtualization capability. This work runs 64bit guests on z800/z890/z900/z990/z9/z10 class machines with a 64bit linux host. Userspace will follow once we're done brushing it over. The patch queue consists of the following patches, which can be applied in sequence on top of kvm.git

Hi all, this series improves the use_mm / unuse_mm interface by better documenting the assumptions, and my taking the set_fs manipulations spread over the callers into the core API.

Hi all, this series improves the use_mm / unuse_mm interface by better documenting the assumptions, and my taking the set_fs manipulations spread over the callers into the core API.