kernel/arch/um/include/asm/pgtable.h, branch linux-5.1.y

um: Avoid marking pages with "changed protection"

2018-12-27T21:48:34Z

Changing protection is a very high cost operation in UML because in addition to an extra syscall it also interrupts mmap merge sequences generated by the tlb. While the condition is not particularly common it is worth avoiding. Signed-off-by: Anton Ivanov Signed-off-by: Richard Weinberger

um: kill pfn_t

2016-01-16T01:56:32Z

The core has developed a need for a "pfn_t" type [1]. Convert the usage of pfn_t by usermode-linux to an unsigned long, and update pfn_to_phys() to drop its expectation of a typed pfn. [1]: https://lists.01.org/pipermail/linux-nvdimm/2015-September/002199.html Signed-off-by: Dan Williams Cc: Dave Hansen Cc: Jeff Dike Cc: Richard Weinberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

um: Remove broken highmem support

2015-04-13T19:01:02Z

Highmem was always buggy and experimental on UML(i386). In times where 64 bit computers are default we can remove that experimental code. Signed-off-by: Richard Weinberger

um: drop _PAGE_FILE and pte_file()-related helpers

2015-02-10T22:30:33Z

We've replaced remap_file_pages(2) implementation with emulation. Nobody creates non-linear mapping anymore. Signed-off-by: Kirill A. Shutemov Cc: Jeff Dike Cc: Richard Weinberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

consolidate io_remap_pfn_range definitions

2013-06-29T08:46:35Z

Signed-off-by: Al Viro

um: get rid of pointless include "..." where include <...> will do

2012-10-09T20:28:45Z

Signed-off-by: Al Viro Signed-off-by: Richard Weinberger

um: Fix __swp_type()

2012-05-21T19:09:35Z

The current __swp_type() function uses a too small bitshift. Using more than one swap files causes bad pages because the type bits clash with other page flags. CC: stable@kernel.org Analyzed-by: Hugh Dickins Signed-off-by: Richard Weinberger

um: Implement a custom pte_same() function

2012-05-21T19:09:34Z

UML uses the _PAGE_NEWPAGE flag to mark pages which are not jet installed on the host side using mmap(). pte_same() has to ignore this flag, otherwise unuse_pte_range() is unable to unuse the page because two identical page tables entries with different _PAGE_NEWPAGE flags would not match and swapoff() would never return. CC: stable@kernel.org Analyzed-by: Hugh Dickins Signed-off-by: Richard Weinberger

um: Serve io_remap_pfn_range()

2012-03-24T23:29:56Z

At some places io_remap_pfn_range() is needed. UML has to serve it like all other archs do. Signed-off-by: Richard Weinberger

mm: remove pte_*map_nested()

2010-10-26T23:52:08Z

Since we no longer need to provide KM_type, the whole pte_*map_nested() API is now redundant, remove it. Signed-off-by: Peter Zijlstra Acked-by: Chris Metcalf Cc: David Howells Cc: Hugh Dickins Cc: Rik van Riel Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Steven Rostedt Cc: Russell King Cc: Ralf Baechle Cc: David Miller Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds