On 28/07/15 22:06, H. Peter Anvin wrote: > On 07/28/2015 08:02 AM, Julien Grall wrote: >> Hi all, >> >> This patch series aims to use the memory terminologies described in >> include/linux/mm.h [1] for Linux xen code. >> >> Linux is using mistakenly MFN when GFN is meant, I suspect this is because the >> first support of Xen was for PV. This has brought some misimplementation >> of memory helpers on ARM and make the developper confused about the expected >> behavior. >> >> For instance, with pfn_to_mfn, we expect to get a MFN based on the name. >> Although, if we look at the implementation on x86, it's returning a GFN. >> Most of the callers are also using it this way. >> >> The first 2 patches of this series is ARM related in order to remove >> PV specific helpers which should not be used and fixing the implementation of >> pfn_to_mfn. >> >> The rest of the series is here rename most of the usage in the common code >> of MFN to GFN. I also took the opportunity to replace most of the call to >> pfn_to_gfn in the common code by page_to_gfn avoid construction such >> as pfn_to_gfn(page_to_pfn(...). >> >> Note the one xen-blkfront will be dropped by 64K series [2], I can include it >> if necessary. >> > Can we actually get some documentation for Xen before starting to change > names around? http://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=e758ed14f390342513405dd766e874934573e6cb ~Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
