Messages in this thread | | | Subject | Re: [PATCH 18/22] mm: mark DEVICE_PUBLIC as broken | From | Ralph Campbell <> | Date | Thu, 13 Jun 2019 12:53:02 -0700 |
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On 6/13/19 12:44 PM, Jason Gunthorpe wrote: > On Thu, Jun 13, 2019 at 11:43:21AM +0200, Christoph Hellwig wrote: >> The code hasn't been used since it was added to the tree, and doesn't >> appear to actually be usable. Mark it as BROKEN until either a user >> comes along or we finally give up on it. >> >> Signed-off-by: Christoph Hellwig <hch@lst.de> >> mm/Kconfig | 1 + >> 1 file changed, 1 insertion(+) >> >> diff --git a/mm/Kconfig b/mm/Kconfig >> index 0d2ba7e1f43e..406fa45e9ecc 100644 >> +++ b/mm/Kconfig >> @@ -721,6 +721,7 @@ config DEVICE_PRIVATE >> config DEVICE_PUBLIC >> bool "Addressable device memory (like GPU memory)" >> depends on ARCH_HAS_HMM >> + depends on BROKEN >> select HMM >> select DEV_PAGEMAP_OPS > > This seems a bit harsh, we do have another kconfig that selects this > one today: > > config DRM_NOUVEAU_SVM > bool "(EXPERIMENTAL) Enable SVM (Shared Virtual Memory) support" > depends on ARCH_HAS_HMM > 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 > Shared Virtual Memory (SVM). > > Maybe it should be depends on STAGING not broken? > > or maybe nouveau_svm doesn't actually need DEVICE_PRIVATE? > > Jason
I think you are confusing DEVICE_PRIVATE for DEVICE_PUBLIC. DRM_NOUVEAU_SVM does use DEVICE_PRIVATE but not DEVICE_PUBLIC.
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