Messages in this thread | | | Date | Thu, 19 Nov 2020 08:46:01 +0000 | From | Mel Gorman <> | Subject | Re: [patch V4 2/8] mm/highmem: Provide CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP |
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On Wed, Nov 18, 2020 at 01:13:57PM -0800, Linus Torvalds wrote: > On Wed, Nov 18, 2020 at 12:58 PM Thomas Gleixner <tglx@linutronix.de> wrote: > > > > Provide CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP which forces the temporary > > mapping even for lowmem pages. This needs to be a seperate config switch > > because this only works on architectures which do not have cache aliasing > > problems. > > Very good. And you made sure to have a comment to not enable it for > production systems. > > Hopefully people will even read it ;) >
And not start thinking it as a security hardening option.
-- Mel Gorman SUSE Labs
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