Added amdgpu-slice.patch and amdgpu-fallback.patch to fix APU identification
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Mika Penttilä
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b224549118
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51
amdgpu-fallback.patch
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51
amdgpu-fallback.patch
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From 871e326ac799ae28ee4d98da9025028050c085cd Mon Sep 17 00:00:00 2001
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From: Mario Limonciello <mario.limonciello@amd.com>
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Date: Thu, 16 Oct 2025 10:53:01 -0500
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Subject: [PATCH] amdgpu: Only read /proc/cpuinfo as a fallback
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Some older Vega APUs don't provide a very useful string. If we have
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a string in amdgpu.ids use that, but fallback to /proc/cpuinfo.
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Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
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---
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amdgpu/amdgpu_asic_id.c | 14 +++++++-------
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1 file changed, 7 insertions(+), 7 deletions(-)
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diff --git a/amdgpu/amdgpu_asic_id.c b/amdgpu/amdgpu_asic_id.c
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index 2eeca0ec..2e52666c 100644
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--- a/amdgpu/amdgpu_asic_id.c
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+++ b/amdgpu/amdgpu_asic_id.c
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@@ -169,17 +169,11 @@ void amdgpu_parse_asic_ids(struct amdgpu_device *dev)
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int line_num = 1;
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int r = 0;
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- if (dev->info.ids_flags & AMDGPU_IDS_FLAGS_FUSION) {
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- amdgpu_parse_proc_cpuinfo(dev);
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- if (dev->marketing_name != NULL)
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- return;
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- }
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-
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fp = fopen(AMDGPU_ASIC_ID_TABLE, "r");
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if (!fp) {
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fprintf(stderr, "%s: %s\n", AMDGPU_ASIC_ID_TABLE,
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strerror(errno));
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- return;
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+ goto get_cpu;
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}
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/* 1st valid line is file version */
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@@ -220,4 +214,10 @@ void amdgpu_parse_asic_ids(struct amdgpu_device *dev)
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free(line);
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fclose(fp);
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+
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+get_cpu:
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+ if (dev->info.ids_flags & AMDGPU_IDS_FLAGS_FUSION &&
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+ dev->marketing_name == NULL) {
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+ amdgpu_parse_proc_cpuinfo(dev);
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+ }
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}
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--
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2.50.0
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71
amdgpu-slice.patch
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71
amdgpu-slice.patch
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From 90656fc8e4150fc175ddadb788912674b2c4a705 Mon Sep 17 00:00:00 2001
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From: "Mario Limonciello (AMD)" <superm1@kernel.org>
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Date: Thu, 16 Oct 2025 10:01:42 -0500
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Subject: [PATCH] amdgpu: Slice and dice the string for APUs
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The string will generally have a CPU and GPU component, so if both
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are found split it up. Make sure that it starts with AMD to be
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consistent.
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Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
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---
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amdgpu/amdgpu_asic_id.c | 29 +++++++++++++++++++++++------
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1 file changed, 23 insertions(+), 6 deletions(-)
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diff --git a/amdgpu/amdgpu_asic_id.c b/amdgpu/amdgpu_asic_id.c
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index 7bdb2b67..2eeca0ec 100644
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--- a/amdgpu/amdgpu_asic_id.c
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+++ b/amdgpu/amdgpu_asic_id.c
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@@ -107,6 +107,7 @@ out:
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static void amdgpu_parse_proc_cpuinfo(struct amdgpu_device *dev)
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{
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const char *search_key = "model name";
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+ const char *radeon_key = "Radeon";
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char *line = NULL;
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size_t len = 0;
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FILE *fp;
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@@ -124,18 +125,34 @@ static void amdgpu_parse_proc_cpuinfo(struct amdgpu_device *dev)
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if (strncmp(line, search_key, strlen(search_key)))
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continue;
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- /* get content after colon and strip whitespace */
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- value = strtok_r(line, ":", &saveptr);
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- value = strtok_r(NULL, ":", &saveptr);
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- if (value == NULL)
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- continue;
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+ /* check for parts that have both CPU and GPU information */
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+ value = strstr(line, radeon_key);
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+
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+ /* get content after the first colon */
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+ if (value == NULL) {
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+ value = strstr(line, ":");
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+ if (value == NULL)
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+ continue;
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+ value++;
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+ }
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+
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+ /* strip whitespace */
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while (*value == ' ' || *value == '\t')
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value++;
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saveptr = strchr(value, '\n');
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if (saveptr)
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*saveptr = '\0';
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- dev->marketing_name = strdup(value);
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+ /* Add AMD to the new string if it's missing from slicing/dicing */
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+ if (strncmp(value, "AMD", 3) != 0) {
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+ char *tmp = malloc(strlen(value) + 5);
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+
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+ if (!tmp)
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+ break;
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+ sprintf(tmp, "AMD %s", value);
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+ dev->marketing_name = tmp;
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+ } else
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+ dev->marketing_name = strdup(value);
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break;
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}
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--
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2.50.0
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@ -53,7 +53,7 @@ end}
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Name: libdrm
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Summary: Direct Rendering Manager runtime library
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Version: 2.4.%{lib_version}
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Release: 1%{?dist}
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Release: 2%{?dist}
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License: MIT
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URL: https://dri.freedesktop.org
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@ -88,6 +88,8 @@ Patch1001: libdrm-make-dri-perms-okay.patch
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Patch1002: libdrm-2.4.0-no-bc.patch
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# use /proc/cpuinfo to identify AMD APU
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Patch1003: amdgpu-apu.patch
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Patch1004: amdgpu-slice.patch
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Patch1005: amdgpu-fallback.patch
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%description
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Direct Rendering Manager runtime library
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@ -285,6 +287,9 @@ cp %{SOURCE1} %{buildroot}%{_docdir}/libdrm
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%endif
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%changelog
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* Wed Oct 22 2025 Mika Penttilä <mpenttil@redhat.com> - 2.4.127-2
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- Added amdgpu-slice.patch and amdgpu-fallback.patch
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* Mon Oct 20 2025 Mika Penttilä <mpenttil@redhat.com> - 2.4.127-1
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- Update to 2.4.127
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amdgpu-apu.patch: Read model name from /proc/cpuinfo for APUs
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