Messages in this thread | | | Date | Wed, 24 Jun 2015 14:35:55 +0200 | From | Richard Weinberger <> | Subject | Re: [PATCH v5 6/6] arch, x86: pmem api for ensuring durability of persistent memory updates |
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Am 24.06.2015 um 14:08 schrieb Christoph Hellwig: > On Tue, Jun 23, 2015 at 12:39:09PM +0200, Richard Weinberger wrote: >> Not sure if I understand this correctly, is the plan to support pmem also on UML? >> At least drivers/block/pmem.c cannot work on UML as it depends on io memory. >> >> Only x86 seems to have ARCH_HAS_NOCACHE_UACCESS, if UML would offer these methods >> what drivers need them? I'm still not sure where it would make sense on UML as >> uaccess on UML means ptrace() between host and guest process. > > Ok, that makese snese. Dan, how about just moving the new pmem helpers > from cacheflush.h to a new asm/pmem.h to avoid having them dragged into > the um build?
If UML does not build for whatever reason, please CC me. I'll happily help out. Historically UML includes a lot stuff it should not. So, untangling header dependencies does often wonders. :-)
Thanks, //richard
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