On Thu, Jun 13, 2019 at 11:43:23AM +0200, Christoph Hellwig wrote:
> The ZONE_DEVICE support doesn't depend on anything HMM related, just on
> various bits of arch support as indicated by the architecture. Also
> don't select the option from nouveau as it isn't present in many setups,
> and depend on it instead.
>
> Signed-off-by: Christoph Hellwig
> drivers/gpu/drm/nouveau/Kconfig | 2 +-
> mm/Kconfig | 5 ++---
> 2 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
> index dba2613f7180..6303d203ab1d 100644
> +++ b/drivers/gpu/drm/nouveau/Kconfig
> @@ -85,10 +85,10 @@ config DRM_NOUVEAU_BACKLIGHT
> config DRM_NOUVEAU_SVM
> bool "(EXPERIMENTAL) Enable SVM (Shared Virtual Memory) support"
> depends on ARCH_HAS_HMM
> + depends on DEVICE_PRIVATE
> depends on DRM_NOUVEAU
> depends on STAGING
> select HMM_MIRROR
> - select DEVICE_PRIVATE
> default n
> help
> Say Y here if you want to enable experimental support for
Ben, I heard you might have a patch like this in your tree, but I
don't think I could find your tree??
Do you have any nouveau/Kconfig patches that might conflict? Thanks
Does this fix the randconfigs failures that have been reported?
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 406fa45e9ecc..4dbd718c8cf4 100644
> +++ b/mm/Kconfig
> @@ -677,13 +677,13 @@ config ARCH_HAS_HMM_MIRROR
>
> config ARCH_HAS_HMM
> bool
> - default y
> depends on (X86_64 || PPC64)
> depends on ZONE_DEVICE
> depends on MMU && 64BIT
> depends on MEMORY_HOTPLUG
> depends on MEMORY_HOTREMOVE
> depends on SPARSEMEM_VMEMMAP
> + default y
What is the reason we have this ARCH thing anyhow? Does hmm have arch
dependencies someplace?
Thanks
Jason
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