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drm/amdkfd: Have kfd driver use same PASID values from graphic driver

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Current kfd driver has its own PASID value for a kfd process and uses it to
locate vm at interrupt handler or mapping between kfd process and vm. That
design is not working when a physical gpu device has multiple spatial
partitions, ex: adev in CPX mode. This patch has kfd driver use same pasid
values that graphic driver generated which is per vm per pasid.

These pasid values are passed to fw/hardware. We do not need change interrupt
handler though more pasid values are used. Also, pasid values at log are
replaced by user process pid; pasid values are not exposed to user. Users see
their process pids that have meaning in user space.

Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiaogang Chen
2025-01-13 17:35:59 -06:00
committed by Alex Deucher
parent ca44922107
commit 8544374c0f
16 changed files with 197 additions and 182 deletions
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11
drivers/gpu/drm/amd/amdkfd/kfd_priv.h
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@@ -851,6 +851,8 @@ struct kfd_process_device {
/* Tracks queue reset status */
bool has_reset_queue;
u32 pasid;
};
#define qpd_to_pdd(x) container_of(x, struct kfd_process_device, qpd)
@@ -910,8 +912,6 @@ struct kfd_process {
/* We want to receive a notification when the mm_struct is destroyed */
struct mmu_notifier mmu_notifier;
u32 pasid;
/*
* Array of kfd_process_device pointers,
* one for each device the process is using.
@@ -1039,7 +1039,8 @@ void kfd_process_destroy_wq(void);
void kfd_cleanup_processes(void);
struct kfd_process *kfd_create_process(struct task_struct *thread);
struct kfd_process *kfd_get_process(const struct task_struct *task);
struct kfd_process *kfd_lookup_process_by_pasid(u32 pasid);
struct kfd_process *kfd_lookup_process_by_pasid(u32 pasid,
struct kfd_process_device **pdd);
struct kfd_process *kfd_lookup_process_by_mm(const struct mm_struct *mm);
int kfd_process_gpuidx_from_gpuid(struct kfd_process *p, uint32_t gpu_id);
@@ -1337,7 +1338,7 @@ void device_queue_manager_uninit(struct device_queue_manager *dqm);
struct kernel_queue *kernel_queue_init(struct kfd_node *dev,
enum kfd_queue_type type);
void kernel_queue_uninit(struct kernel_queue *kq);
int kfd_dqm_evict_pasid(struct device_queue_manager *dqm, u32 pasid);
int kfd_evict_process_device(struct kfd_process_device *pdd);
int kfd_dqm_suspend_bad_queue_mes(struct kfd_node *knode, u32 pasid, u32 doorbell_id);
/* Process Queue Manager */
@@ -1492,7 +1493,7 @@ int kfd_event_create(struct file *devkfd, struct kfd_process *p,
int kfd_get_num_events(struct kfd_process *p);
int kfd_event_destroy(struct kfd_process *p, uint32_t event_id);
void kfd_signal_vm_fault_event(struct kfd_node *dev, u32 pasid,
void kfd_signal_vm_fault_event(struct kfd_process_device *pdd,
struct kfd_vm_fault_info *info,
struct kfd_hsa_memory_exception_data *data);