diff options
Diffstat (limited to 'meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1534-drm-amdkfd-Clamp-EOP-queue-size-correctly-on-Gfx8.patch')
-rw-r--r-- | meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1534-drm-amdkfd-Clamp-EOP-queue-size-correctly-on-Gfx8.patch | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1534-drm-amdkfd-Clamp-EOP-queue-size-correctly-on-Gfx8.patch b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1534-drm-amdkfd-Clamp-EOP-queue-size-correctly-on-Gfx8.patch deleted file mode 100644 index b78d6224..00000000 --- a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/1534-drm-amdkfd-Clamp-EOP-queue-size-correctly-on-Gfx8.patch +++ /dev/null @@ -1,41 +0,0 @@ -From 24e4ad64a508f765f02709ed631d1fc9213b9d50 Mon Sep 17 00:00:00 2001 -From: Jay Cornwall <Jay.Cornwall@amd.com> -Date: Mon, 10 Oct 2016 14:02:56 -0500 -Subject: [PATCH 1534/4131] drm/amdkfd: Clamp EOP queue size correctly on Gfx8 - -Gfx8 HW incorrectly clamps CP_HQD_EOP_CONTROL.EOP_SIZE, which can -lead to scheduling deadlock due to SE EOP done counter overflow. - -Enforce a EOP queue size limit which prevents the CP from sending -more than 0xFF events at a time. - -Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com> ---- - drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c | 11 +++++++++-- - 1 file changed, 9 insertions(+), 2 deletions(-) - -diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c -index ebb4664..579cc68 100644 ---- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c -+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_vi.c -@@ -215,8 +215,15 @@ static int __update_mqd(struct mqd_manager *mm, void *mqd, - 3 << CP_HQD_IB_CONTROL__MIN_IB_AVAIL_SIZE__SHIFT | - mtype << CP_HQD_IB_CONTROL__MTYPE__SHIFT; - -- m->cp_hqd_eop_control |= -- ffs(q->eop_ring_buffer_size / sizeof(unsigned int)) - 1 - 1; -+ /* -+ * HW does not clamp this field correctly. Maximum EOP queue size -+ * is constrained by per-SE EOP done signal count, which is 8-bit. -+ * Limit is 0xFF EOP entries (= 0x7F8 dwords). CP will not submit -+ * more than (EOP entry count - 1) so a queue size of 0x800 dwords -+ * is safe, giving a maximum field value of 0xA. -+ */ -+ m->cp_hqd_eop_control |= min(0xA, -+ ffs(q->eop_ring_buffer_size / sizeof(unsigned int)) - 1 - 1); - m->cp_hqd_eop_base_addr_lo = - lower_32_bits(q->eop_ring_buffer_address >> 8); - m->cp_hqd_eop_base_addr_hi = --- -2.7.4 - |