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SubjectRe: Build regressions/improvements in v5.17-rc1
From

Am 2022-01-24 um 14:11 schrieb Randy Dunlap:
> On 1/24/22 10:55, Geert Uytterhoeven wrote:
>> Hi Alex,
>>
>> On Mon, Jan 24, 2022 at 7:52 PM Alex Deucher <alexdeucher@gmail.com> wrote:
>>> On Mon, Jan 24, 2022 at 5:25 AM Geert Uytterhoeven <geert@linux-m68k.org> 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?

Does it make sense to configure a UML kernel with a real device driver
in the first place? Or should we just prevent enabling amdgpu for UML
with a Kconfig dependency?

Regards,
  Felix


>
> thanks.
>
> ---
> From: Randy Dunlap <rdunlap@infradead.org>
>
>
> ../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>
> ---
> 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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