Re: add a not device managed memremap_pages v3
On Sun, Aug 18, 2019 at 11:05:53AM +0200, Christoph Hellwig wrote: > Hi Dan and Jason, > > Bharata has been working on secure page management for kvmppc guests, > and one I thing I noticed is that he had to fake up a struct device > just so that it could be passed to the devm_memremap_pages > instrastructure for device private memory. > > This series adds non-device managed versions of the > devm_request_free_mem_region and devm_memremap_pages functions for > his use case. > > Changes since v2: > - improved changelogs that the the v2 changes into account > > Changes since v1: > - don't overload devm_request_free_mem_region > - export the memremap_pages and munmap_pages as kvmppc can be a module Looks good, I fixed up the patch with Dan's note and reviewed them as well. Applied to hmm.git as requested Thanks, Jason
Re: add a not device managed memremap_pages v3
On Mon, Aug 19, 2019 at 10:57:52AM +0530, Bharata B Rao wrote: > On Sun, Aug 18, 2019 at 11:05:53AM +0200, Christoph Hellwig wrote: > > Hi Dan and Jason, > > > > Bharata has been working on secure page management for kvmppc guests, > > and one I thing I noticed is that he had to fake up a struct device > > just so that it could be passed to the devm_memremap_pages > > instrastructure for device private memory. > > > > This series adds non-device managed versions of the > > devm_request_free_mem_region and devm_memremap_pages functions for > > his use case. > > Tested kvmppc ultravisor patchset with migrate_vma changes and this > patchset. (Had to manually patch mm/memremap.c instead of kernel/memremap.c > though) Oh. I rebased to the hmm tree, and that didn't have the rename yet. And I didn't even notice that as git handled it transparently.
Re: add a not device managed memremap_pages v3
On Sun, Aug 18, 2019 at 11:05:53AM +0200, Christoph Hellwig wrote: > Hi Dan and Jason, > > Bharata has been working on secure page management for kvmppc guests, > and one I thing I noticed is that he had to fake up a struct device > just so that it could be passed to the devm_memremap_pages > instrastructure for device private memory. > > This series adds non-device managed versions of the > devm_request_free_mem_region and devm_memremap_pages functions for > his use case. Tested kvmppc ultravisor patchset with migrate_vma changes and this patchset. (Had to manually patch mm/memremap.c instead of kernel/memremap.c though) For the series, Tested-by: Bharata B Rao
add a not device managed memremap_pages v3
Hi Dan and Jason, Bharata has been working on secure page management for kvmppc guests, and one I thing I noticed is that he had to fake up a struct device just so that it could be passed to the devm_memremap_pages instrastructure for device private memory. This series adds non-device managed versions of the devm_request_free_mem_region and devm_memremap_pages functions for his use case. Changes since v2: - improved changelogs that the the v2 changes into account Changes since v1: - don't overload devm_request_free_mem_region - export the memremap_pages and munmap_pages as kvmppc can be a module
