From: Randy Dunlap rdunlap@infradead.org
cpuinfo_x86 and its associated macros are not available under ARCH=um, even though CONFIG_X86_64 is defined.
This patch (and discussion) were originally posted here: https://lkml.org/lkml/2022/1/24/1547
This produces the following build errors: ../drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:1556:9: note: in expansion of macro ‘cpu_data’ return cpu_data(first_cpu_of_numa_node).apicid; ^~~~~~~~ ../drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:1560:1: error: control reaches end of non-void function [-Werror=return-type]
../drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c: In function ‘kfd_fill_iolink_info_for_cpu’: ../arch/um/include/asm/processor-generic.h:103:19: error: called object is not a function or function pointer #define cpu_data (&boot_cpu_data) ~^~~~~~~~~~~~~~~ ../drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1688:27: note: in expansion of macro ‘cpu_data’ struct cpuinfo_x86 *c = &cpu_data(0); ^~~~~~~~ ../drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1691:7: error: dereferencing pointer to incomplete type ‘struct cpuinfo_x86’ if (c->x86_vendor == X86_VENDOR_AMD) ^~ ../drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1691:23: error: ‘X86_VENDOR_AMD’ undeclared (first use in this function); did you mean ‘X86_VENDOR_ANY’? if (c->x86_vendor == X86_VENDOR_AMD) ^~~~~~~~~~~~~~ X86_VENDOR_ANY
../drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c: In function ‘kfd_create_vcrat_image_cpu’: ../drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_crat.c:1742:11: warning: unused variable ‘entries’ [-Wunused-variable] uint32_t entries = 0;
Signed-off-by: Randy Dunlap rdunlap@infradead.org Signed-off-by: David Gow davidgow@google.com --- drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 6 +++--- drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c index 9624bbe8b501..b1e2d117be3d 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c @@ -1682,7 +1682,7 @@ static int kfd_fill_mem_info_for_cpu(int numa_node_id, int *avail_size, return 0; }
-#ifdef CONFIG_X86_64 +#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) static int kfd_fill_iolink_info_for_cpu(int numa_node_id, int *avail_size, uint32_t *num_entries, struct crat_subtype_iolink *sub_type_hdr) @@ -1741,7 +1741,7 @@ static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size) struct crat_subtype_generic *sub_type_hdr; int avail_size = *size; int numa_node_id; -#ifdef CONFIG_X86_64 +#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) uint32_t entries = 0; #endif int ret = 0; @@ -1806,7 +1806,7 @@ static int kfd_create_vcrat_image_cpu(void *pcrat_image, size_t *size) sub_type_hdr->length);
/* Fill in Subtype: IO Link */ -#ifdef CONFIG_X86_64 +#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) ret = kfd_fill_iolink_info_for_cpu(numa_node_id, &avail_size, &entries, (struct crat_subtype_iolink *)sub_type_hdr); diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c index 948fbb39336e..b38fc530ffe2 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c @@ -1552,7 +1552,7 @@ static int kfd_cpumask_to_apic_id(const struct cpumask *cpumask) first_cpu_of_numa_node = cpumask_first(cpumask); if (first_cpu_of_numa_node >= nr_cpu_ids) return -1; -#ifdef CONFIG_X86_64 +#if defined(CONFIG_X86_64) && !defined(CONFIG_UML) return cpu_data(first_cpu_of_numa_node).apicid; #else return first_cpu_of_numa_node;