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drm/amdkfd: Handle VM faults in KFD

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1. Pre-GFX9 the amdgpu ISR saves the vm-fault status and address per
   per-vmid. amdkfd needs to get the information from amdgpu through the
   new get_vm_fault_info interface. On GFX9 and later, all the required
   information is in the IH ring
2. amdkfd unmaps all queues from the faulting process and create new
   run-list without the guilty process
3. amdkfd notifies the runtime of the vm fault trap via EVENT_TYPE_MEMORY

Signed-off-by: shaoyun liu <shaoyun.liu@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
shaoyunl 2018-07-11 22:32:50 -04:00 • committed by Oded Gabbay
parent b97dfa27ef
commit 2640c3facb
7 changed files with 98 additions and 7 deletions
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2
include/uapi/linux/kfd_ioctl.h
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@ -219,7 +219,7 @@ struct kfd_memory_exception_failure {
__u32 NotPresent; /* Page not present or supervisor privilege */
__u32 ReadOnly; /* Write access to a read-only page */
__u32 NoExecute; /* Execute access to a page marked NX */
__u32 pad;
__u32 imprecise; /* Can't determine the exact fault address */
};
/* memory exception data*/