Hi all,
As suggested by Peter Zijlstra below [1], this series aims to remove
tlb_remove_page_ptdesc().
: Fundamentally tlb_remove_page() is about removing *pages* as from a PTE,
: there should not be a page-table anywhere near here *ever*.
:
: Yes, some architectures use tlb_remove_page() for page-tables too, but
: that is more or less an implementation detail that can be fixed.
After this series, all architectures use tlb_remove_table() or tlb_remove_ptdesc()
to remove the page table pages. In the future, once all architectures using
tlb_remove_table() have also converted to using struct ptdesc (eg. powerpc), it
may be possible to use only tlb_remove_ptdesc().
Note: there will be some overlap between my patch #4 and Rik van Riel's patch #1 [2],
once his patch is merged into the next branch, I can rebase onto his patch.
And patch #4 can actually make x86 use tlb_remove_ptdesc(), but due to the
above situation, I have not done so yet.
This series is based on next-20250122.
Comments and suggestions are welcome!
Thanks,
Qi
[1]. https://lore.kernel.org/linux-mm/20250103111457.GC22934@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
[2]. https://lore.kernel.org/lkml/20250123042447.2259648-2-riel@xxxxxxxxxxx/
Qi Zheng (5):
mm: pgtable: make generic tlb_remove_table() use struct ptdesc
mm: pgtable: convert some architectures to use tlb_remove_ptdesc()
riscv: pgtable: unconditionally use tlb_remove_ptdesc()
x86: pgtable: unconditionally use tlb_remove_table()
mm: pgtable: remove tlb_remove_page_ptdesc()
arch/csky/include/asm/pgalloc.h | 3 +--
arch/hexagon/include/asm/pgalloc.h | 3 +--
arch/loongarch/include/asm/pgalloc.h | 3 +--
arch/m68k/include/asm/sun3_pgalloc.h | 3 +--
arch/mips/include/asm/pgalloc.h | 3 +--
arch/nios2/include/asm/pgalloc.h | 9 ++++-----
arch/openrisc/include/asm/pgalloc.h | 3 +--
arch/riscv/include/asm/pgalloc.h | 26 ++++----------------------
arch/sh/include/asm/pgalloc.h | 3 +--
arch/um/include/asm/pgalloc.h | 9 +++------
arch/x86/kernel/paravirt.c | 17 +----------------
arch/x86/mm/pgtable.c | 11 -----------
include/asm-generic/tlb.h | 12 +++---------
13 files changed, 22 insertions(+), 83 deletions(-)
--
2.20.1
