This is a note to let you know that I've just added the patch titled
Revert "drm/amdkfd: Relocate TBA/TMA to opposite side of VM hole"
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-drm-amdkfd-relocate-tba-tma-to-opposite-side-of-vm-hole.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0f35b0a7b8fa402adbffa2565047cdcc4c480153 Mon Sep 17 00:00:00 2001
From: Kaibo Ma <ent3rm4n@xxxxxxxxx>
Date: Wed, 3 Jan 2024 12:29:56 +0800
Subject: Revert "drm/amdkfd: Relocate TBA/TMA to opposite side of VM hole"
From: Kaibo Ma <ent3rm4n@xxxxxxxxx>
commit 0f35b0a7b8fa402adbffa2565047cdcc4c480153 upstream.
That commit causes NULL pointer dereferences in dmesgs when
running applications using ROCm, including clinfo, blender,
and PyTorch, since v6.6.1. Revert it to fix blender again.
This reverts commit 96c211f1f9ef82183493f4ceed4e347b52849149.
Closes: https://github.com/ROCm/ROCm/issues/2596
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2991
Reviewed-by: Jay Cornwall <jay.cornwall@xxxxxxx>
Signed-off-by: Kaibo Ma <ent3rm4n@xxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_flat_memory.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_flat_memory.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_flat_memory.c
@@ -330,12 +330,6 @@ static void kfd_init_apertures_vi(struct
pdd->gpuvm_limit =
pdd->dev->kfd->shared_resources.gpuvm_size - 1;
- /* dGPUs: the reserved space for kernel
- * before SVM
- */
- pdd->qpd.cwsr_base = SVM_CWSR_BASE;
- pdd->qpd.ib_base = SVM_IB_BASE;
-
pdd->scratch_base = MAKE_SCRATCH_APP_BASE_VI();
pdd->scratch_limit = MAKE_SCRATCH_APP_LIMIT(pdd->scratch_base);
}
@@ -345,18 +339,18 @@ static void kfd_init_apertures_v9(struct
pdd->lds_base = MAKE_LDS_APP_BASE_V9();
pdd->lds_limit = MAKE_LDS_APP_LIMIT(pdd->lds_base);
- pdd->gpuvm_base = PAGE_SIZE;
+ /* Raven needs SVM to support graphic handle, etc. Leave the small
+ * reserved space before SVM on Raven as well, even though we don't
+ * have to.
+ * Set gpuvm_base and gpuvm_limit to CANONICAL addresses so that they
+ * are used in Thunk to reserve SVM.
+ */
+ pdd->gpuvm_base = SVM_USER_BASE;
pdd->gpuvm_limit =
pdd->dev->kfd->shared_resources.gpuvm_size - 1;
pdd->scratch_base = MAKE_SCRATCH_APP_BASE_V9();
pdd->scratch_limit = MAKE_SCRATCH_APP_LIMIT(pdd->scratch_base);
-
- /*
- * Place TBA/TMA on opposite side of VM hole to prevent
- * stray faults from triggering SVM on these pages.
- */
- pdd->qpd.cwsr_base = pdd->dev->kfd->shared_resources.gpuvm_size;
}
int kfd_init_apertures(struct kfd_process *process)
@@ -413,6 +407,12 @@ int kfd_init_apertures(struct kfd_proces
return -EINVAL;
}
}
+
+ /* dGPUs: the reserved space for kernel
+ * before SVM
+ */
+ pdd->qpd.cwsr_base = SVM_CWSR_BASE;
+ pdd->qpd.ib_base = SVM_IB_BASE;
}
dev_dbg(kfd_device, "node id %u\n", id);
Patches currently in stable-queue which might be from ent3rm4n@xxxxxxxxx are
queue-6.6/revert-drm-amdkfd-relocate-tba-tma-to-opposite-side-of-vm-hole.patch
