From e948e06fc63a1c1e36ec4c8e5c510b881ff19c26 Mon Sep 17 00:00:00 2001 From: Alastair D'Silva Date: Fri, 11 May 2018 16:13:01 +1000 Subject: ocxl: Expose the thread_id needed for wait on POWER9 In order to successfully issue as_notify, an AFU needs to know the TID to notify, which in turn means that this information should be available in userspace so it can be communicated to the AFU. Signed-off-by: Alastair D'Silva Acked-by: Andrew Donnellan Signed-off-by: Michael Ellerman --- drivers/misc/ocxl/context.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/misc/ocxl/context.c') diff --git a/drivers/misc/ocxl/context.c b/drivers/misc/ocxl/context.c index 909e8807824a..95f74623113e 100644 --- a/drivers/misc/ocxl/context.c +++ b/drivers/misc/ocxl/context.c @@ -34,6 +34,8 @@ int ocxl_context_init(struct ocxl_context *ctx, struct ocxl_afu *afu, mutex_init(&ctx->xsl_error_lock); mutex_init(&ctx->irq_lock); idr_init(&ctx->irq_idr); + ctx->tidr = 0; + /* * Keep a reference on the AFU to make sure it's valid for the * duration of the life of the context @@ -65,6 +67,7 @@ int ocxl_context_attach(struct ocxl_context *ctx, u64 amr) { int rc; + // Locks both status & tidr mutex_lock(&ctx->status_mutex); if (ctx->status != OPENED) { rc = -EIO; @@ -72,7 +75,7 @@ int ocxl_context_attach(struct ocxl_context *ctx, u64 amr) } rc = ocxl_link_add_pe(ctx->afu->fn->link, ctx->pasid, - current->mm->context.id, 0, amr, current->mm, + current->mm->context.id, ctx->tidr, amr, current->mm, xsl_fault_error, ctx); if (rc) goto out; -- cgit v1.2.3-59-g8ed1b