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habanalabs: handle HBM MMU when capturing page fault data

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In case of HBM MMU page fault, capture its relevant mappings.

Signed-off-by: Dani Liberman <dliberman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Dani Liberman 2022-09-29 10:21:28 +03:00 committed by Oded Gabbay
parent 1eebb25929
commit 17f3f42af2
1 changed files with 21 additions and 8 deletions
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29
drivers/misc/habanalabs/common/device.c
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@ -2273,15 +2273,20 @@ void hl_capture_razwi(struct hl_device *hdev, u64 addr, u16 *engine_id, u16 num_
num_of_engines * sizeof(u16));
hdev->captured_err_info.razwi.flags = flags;
}
static void hl_capture_user_mappings(struct hl_device *hdev)
static void hl_capture_user_mappings(struct hl_device *hdev, bool is_pmmu)
{
struct page_fault_info *pgf_info = &hdev->captured_err_info.pgf_info;
struct hl_vm_phys_pg_pack *phys_pg_pack = NULL;
struct hl_vm_hash_node *hnode;
struct hl_userptr *userptr;
enum vm_type *vm_type;
struct hl_ctx *ctx;
u32 map_idx = 0;
int i;
/* Reset previous session count*/
pgf_info->num_of_user_mappings = 0;
ctx = hl_get_compute_ctx(hdev);
if (!ctx) {
dev_err(hdev->dev, "Can't get user context for user mappings\n");
@ -2290,7 +2295,7 @@ static void hl_capture_user_mappings(struct hl_device *hdev)
mutex_lock(&ctx->mem_hash_lock);
hash_for_each(ctx->mem_hash, i, hnode, node)
pgf_info->num_of_user_mappings++;
pgf_info->num_of_user_mappings++;
if (!pgf_info->num_of_user_mappings)
goto finish;
@ -2300,17 +2305,25 @@ static void hl_capture_user_mappings(struct hl_device *hdev)
*/
vfree(pgf_info->user_mappings);
pgf_info->user_mappings =
vmalloc(pgf_info->num_of_user_mappings * sizeof(struct hl_user_mapping));
vzalloc(pgf_info->num_of_user_mappings * sizeof(struct hl_user_mapping));
if (!pgf_info->user_mappings) {
pgf_info->num_of_user_mappings = 0;
goto finish;
}
hash_for_each(ctx->mem_hash, i, hnode, node) {
userptr = hnode->ptr;
pgf_info->user_mappings[map_idx].dev_va = hnode->vaddr;
pgf_info->user_mappings[map_idx].size = userptr->size;
map_idx++;
vm_type = hnode->ptr;
if ((*vm_type == VM_TYPE_USERPTR) && (is_pmmu)) {
userptr = hnode->ptr;
pgf_info->user_mappings[map_idx].dev_va = hnode->vaddr;
pgf_info->user_mappings[map_idx].size = userptr->size;
map_idx++;
} else if ((*vm_type == VM_TYPE_PHYS_PACK) && (!is_pmmu)) {
phys_pg_pack = hnode->ptr;
pgf_info->user_mappings[map_idx].dev_va = hnode->vaddr;
pgf_info->user_mappings[map_idx].size = phys_pg_pack->total_size;
map_idx++;
}
}
finish:
mutex_unlock(&ctx->mem_hash_lock);
@ -2326,5 +2339,5 @@ void hl_capture_page_fault(struct hl_device *hdev, u64 addr, u16 eng_id, bool is
hdev->captured_err_info.pgf_info.pgf.timestamp = ktime_to_ns(ktime_get());
hdev->captured_err_info.pgf_info.pgf.addr = addr;
hdev->captured_err_info.pgf_info.pgf.engine_id = eng_id;
hl_capture_user_mappings(hdev);
hl_capture_user_mappings(hdev, is_pmmu);
}