On Thu 2019-01-17 23:48:30, Edgecombe, Rick P wrote: > On Fri, 2019-01-18 at 00:41 +0100, Pavel Machek wrote: > > Hi! > > > > > > > For architectures with CONFIG_ARCH_HAS_SET_ALIAS, pages can be unmapped > > > > > briefly on the directmap, even when CONFIG_DEBUG_PAGEALLOC is not > > > > > configured. > > > > > So this changes kernel_map_pages and kernel_page_present to be defined > > > > > when > > > > > CONFIG_ARCH_HAS_SET_ALIAS is defined as well. It also changes places > > > > > (page_alloc.c) where those functions are assumed to only be implemented > > > > > when > > > > > CONFIG_DEBUG_PAGEALLOC is defined. > > > > > > > > Which architectures are that? > > > > > > > > Should this be merged to the patch where HAS_SET_ALIAS is introduced? We > > > > don't want broken hibernation in between.... > > > > > > Thanks for taking a look. It was added for x86 for patch 13 in this patchset > > > and > > > there was interest expressed for adding for arm64. If you didn't get the > > > whole > > > set and want to see let me know and I can send it. > > > > I googled in in the meantime. > > > > Anyway, if something is broken between patch 13 and 14, then they > > should be same patch. > Great. It should be ok because the new functions are not used anywhere until > after this patch. Ok, that makes sense. Acked-by: Pavel Machek <pavel@xxxxxx> Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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