Messages in this thread | | | From | Arnd Bergmann <> | Date | Sat, 16 May 2020 09:35:57 +0200 | Subject | Re: ARM: static kernel in vmalloc space |
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On Sat, May 16, 2020 at 8:06 AM afzal mohammed <afzal.mohd.ma@gmail.com> wrote: > > On Thu, May 14, 2020 at 05:32:41PM +0200, Arnd Bergmann wrote: > > > Typical distros currently offer two kernels, with and without LPAE, > > and they probably don't want to add a third one for LPAE with > > either highmem or vmsplit-4g-4g. Having extra user address > > space and more lowmem is both going to help users that > > still have 8GB configurations. > > Okay, so the conclusion i take is, > > 1. VMSPLIT 4G/4G have to live alongside highmem > 2. For user space copy, do pinning followed by kmap
Right, though kmap_atomic() should be sufficient here because it is always a short-lived mapping.
Arnd
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