Stefan Dirsch
a71b936efc
- Disable AMDGPU GFX9/Vega with LLVM < 6.0.0.
* n_Disable-AMDGPU-GFX9-Vega-on-LLVM-lessthan-6.0.0.patch
* While it is supported since LLVM 5.0.0, it was not working
correctly (bnc#1075901). Since we do not have the resources to
determine which fixes should be backported and LLVM 6 will be
released relatively soon, disable the support until then. Users
with the card will have working desktop using software
rendering just like they did with LLVM 4.
OBS-URL: https://build.opensuse.org/request/show/570576
OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/Mesa?expand=0&rev=686
61 lines
2.8 KiB
Diff
61 lines
2.8 KiB
Diff
From 63a73495438d621b8de24fa031a6af938bbf4ff4 Mon Sep 17 00:00:00 2001
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From: Michal Srb <msrb@suse.com>
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Date: Mon, 29 Jan 2018 11:38:28 +0100
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Subject: [PATCH] Disable AMDGPU GFX9/Vega on LLVM < 6.0.0.
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Upstream advertises support since LLVM 5.0.0, but it does not work properly:
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https://bugzilla.opensuse.org/show_bug.cgi?id=1075901
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---
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src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.c | 13 ++++++++++---
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src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c | 13 ++++++++++---
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2 files changed, 20 insertions(+), 6 deletions(-)
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Index: mesa-17.3.3/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.c
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===================================================================
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--- mesa-17.3.3.orig/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.c
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+++ mesa-17.3.3/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.c
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@@ -46,9 +46,16 @@ do_winsys_init(struct radv_amdgpu_winsys
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if (!ac_query_gpu_info(fd, ws->dev, &ws->info, &ws->amdinfo))
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return false;
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- /* LLVM 5.0 is required for GFX9. */
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- if (ws->info.chip_class >= GFX9 && HAVE_LLVM < 0x0500) {
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- fprintf(stderr, "amdgpu: LLVM 5.0 is required, got LLVM %i.%i\n",
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+ /* LLVM 6.0 is required for GFX9. */
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+ /*
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+ Upstream version of Mesa allows GFX9 since LLVM 5.0, but it does not work correctly:
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+ https://bugzilla.opensuse.org/show_bug.cgi?id=1075901
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+ The issues are fixed in LLVM 6. We have decided to disable GFX9 support with LLVM 5
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+ and wait for LLVM 6.
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+ -- Michal Srb msrb@suse.com, 2018-01-29
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+ */
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+ if (ws->info.chip_class >= GFX9 && HAVE_LLVM < 0x0600) {
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+ fprintf(stderr, "amdgpu: LLVM 6.0 is required, got LLVM %i.%i\n",
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HAVE_LLVM >> 8, HAVE_LLVM & 255);
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return false;
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}
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Index: mesa-17.3.3/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
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===================================================================
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--- mesa-17.3.3.orig/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
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+++ mesa-17.3.3/src/gallium/winsys/amdgpu/drm/amdgpu_winsys.c
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@@ -58,9 +58,16 @@ static bool do_winsys_init(struct amdgpu
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if (!ac_query_gpu_info(fd, ws->dev, &ws->info, &ws->amdinfo))
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goto fail;
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- /* LLVM 5.0 is required for GFX9. */
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- if (ws->info.chip_class >= GFX9 && HAVE_LLVM < 0x0500) {
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- fprintf(stderr, "amdgpu: LLVM 5.0 is required, got LLVM %i.%i\n",
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+ /* LLVM 6.0 is required for GFX9. */
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+ /*
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+ Upstream version of Mesa allows GFX9 since LLVM 5.0, but it does not work correctly:
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+ https://bugzilla.opensuse.org/show_bug.cgi?id=1075901
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+ The issues are fixed in LLVM 6. We have decided to disable GFX9 support with LLVM 5
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+ and wait for LLVM 6.
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+ -- Michal Srb msrb@suse.com, 2018-01-29
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+ */
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+ if (ws->info.chip_class >= GFX9 && HAVE_LLVM < 0x0600) {
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+ fprintf(stderr, "amdgpu: LLVM 6.0 is required, got LLVM %i.%i\n",
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HAVE_LLVM >> 8, HAVE_LLVM & 255);
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goto fail;
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}
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