Re: Build regressions/improvements in v5.17-rc1

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On 1/24/22 10:55, Geert Uytterhoeven wrote:
> Hi Alex,
> 
> On Mon, Jan 24, 2022 at 7:52 PM Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
>> On Mon, Jan 24, 2022 at 5:25 AM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
>>> On Sun, 23 Jan 2022, Geert Uytterhoeven wrote:
>>>>  + /kisskb/src/drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c: error: control reaches end of non-void function [-Werror=return-type]:  => 1560:1
>>
>> I don't really see what's going on here:
>>
>> #ifdef CONFIG_X86_64
>> return cpu_data(first_cpu_of_numa_node).apicid;
>> #else
>> return first_cpu_of_numa_node;
>> #endif
> 
> Ah, the actual failure causing this was not included:
> 
> In file included from /kisskb/src/arch/x86/um/asm/processor.h:41:0,
>                  from /kisskb/src/include/linux/mutex.h:19,
>                  from /kisskb/src/include/linux/kernfs.h:11,
>                  from /kisskb/src/include/linux/sysfs.h:16,
>                  from /kisskb/src/include/linux/kobject.h:20,
>                  from /kisskb/src/include/linux/pci.h:35,
>                  from
> /kisskb/src/drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:25:
> /kisskb/src/drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c: In
> function 'kfd_cpumask_to_apic_id':
> /kisskb/src/arch/um/include/asm/processor-generic.h:103:18: error:
> called object is not a function or function pointer
>  #define cpu_data (&boot_cpu_data)
>                   ^
> /kisskb/src/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;
>          ^
> /kisskb/src/drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c:1560:1:
> error: control reaches end of non-void function [-Werror=return-type]
>  }
>  ^

ah yes, UML.
I have a bunch of UML fixes that I have been hesitant to post.

This is one of them.
What do people think about this?

thanks.

---
From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>


../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@xxxxxxxxxxxxx>
---
 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(-)

--- linux-next-20220107.orig/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ linux-next-20220107/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -1552,7 +1552,7 @@ static int kfd_cpumask_to_apic_id(const
 	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;
--- linux-next-20220107.orig/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
+++ linux-next-20220107/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
@@ -1679,7 +1679,7 @@ static int kfd_fill_mem_info_for_cpu(int
 	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)
@@ -1738,7 +1738,7 @@ static int kfd_create_vcrat_image_cpu(vo
 	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;
@@ -1803,7 +1803,7 @@ static int kfd_create_vcrat_image_cpu(vo
 			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);





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