On Wed, Mar 12, 2014 at 12:04 PM, Linus Torvalds <torva...@linux-foundation.org> wrote: > On Wed, Mar 12, 2014 at 8:46 AM, Linus Torvalds > <torva...@linux-foundation.org> wrote: >> >> But I think that "x86, vdso: Add 32 bit VDSO time support for 32 bit >> kernel" patch needs to die. And the helper patches building up to it >> (just because that patch used [io_]remap_pfn_range()) should die too. >> Why weren't those pages in the vdso*_pages[] array anyway? > > Sorry, confused. FIXMAP, not vdso_pages. > > Anyway, that's what x86-64 does. Why not 32?
A 32-bit process running on a 64-bit kernel cannot access the high fixmap mappings. The VVAR/HPET pages have to be mapped below 4GB. -- Brian Gerst -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
