user/sven/linux.git/include/linux/pgtable.h, branch v6.2.7

Merge tag 'x86_mm_for_6.2_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-17T20:06:53Z

Pull x86 mm updates from Dave Hansen: "New Feature: - Randomize the per-cpu entry areas Cleanups: - Have CR3_ADDR_MASK use PHYSICAL_PAGE_MASK instead of open coding it - Move to "native" set_memory_rox() helper - Clean up pmd_get_atomic() and i386-PAE - Remove some unused page table size macros" * tag 'x86_mm_for_6.2_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (35 commits) x86/mm: Ensure forced page table splitting x86/kasan: Populate shadow for shared chunk of the CPU entry area x86/kasan: Add helpers to align shadow addresses up and down x86/kasan: Rename local CPU_ENTRY_AREA variables to shorten names x86/mm: Populate KASAN shadow for entire per-CPU range of CPU entry area x86/mm: Recompute physical address for every page of per-CPU CEA mapping x86/mm: Rename __change_page_attr_set_clr(.checkalias) x86/mm: Inhibit _PAGE_NX changes from cpa_process_alias() x86/mm: Untangle __change_page_attr_set_clr(.checkalias) x86/mm: Add a few comments x86/mm: Fix CR3_ADDR_MASK x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros mm: Convert __HAVE_ARCH_P..P_GET to the new style mm: Remove pointless barrier() after pmdp_get_lockless() x86/mm/pae: Get rid of set_64bit() x86_64: Remove pointless set_64bit() usage x86/mm/pae: Be consistent with pXXp_get_and_clear() x86/mm/pae: Use WRITE_ONCE() x86/mm/pae: Don't (ab)use atomic64 mm/gup: Fix the lockless PMD access ...

mm: Convert __HAVE_ARCH_P..P_GET to the new style

2022-12-15T18:37:27Z

Since __HAVE_ARCH_* style guards have been depricated in favour of defining the function name onto itself, convert pxxp_get(). Suggested-by: Linus Torvalds Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/Y2EUEBlQXNgaJgoI@hirez.programming.kicks-ass.net

mm: Rename pmd_read_atomic()

2022-12-15T18:37:27Z

There's no point in having the identical routines for PTE/PMD have different names. Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20221022114424.841277397%40infradead.org

mm: Rename GUP_GET_PTE_LOW_HIGH

2022-12-15T18:37:27Z

Since it no longer applies to only PTEs, rename it to PXX. Suggested-by: Linus Torvalds Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20221022114424.776404066%40infradead.org

mm: Fix pmd_read_atomic()

2022-12-15T18:37:27Z

AFAICT there's no reason to do anything different than what we do for PTEs. Make it so (also affects SH). Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20221022114424.711181252%40infradead.org

mm: Update ptep_get_lockless()'s comment

2022-12-15T18:37:27Z

Improve the comment. Suggested-by: Matthew Wilcox Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20221022114424.515572025%40infradead.org

include/linux/pgtable.h: : remove redundant pte variable

2022-12-12T02:12:11Z

Return value from ptep_get_and_clear_full() directly instead of taking this in another redundant variable. Link: https://lkml.kernel.org/r/202211282107437343474@zte.com.cn Signed-off-by: zhang songyi Signed-off-by: Andrew Morton

mm: remove unused savedwrite infrastructure

2022-11-30T23:58:49Z

NUMA hinting no longer uses savedwrite, let's rip it out. ... and while at it, drop __pte_write() and __pmd_write() on ppc64. Link: https://lkml.kernel.org/r/20221108174652.198904-7-david@redhat.com Signed-off-by: David Hildenbrand Cc: Andrea Arcangeli Cc: Anshuman Khandual Cc: Dave Chinner Cc: Hugh Dickins Cc: Linus Torvalds Cc: Mel Gorman Cc: Michael Ellerman Cc: Mike Rapoport Cc: Nadav Amit Cc: Nicholas Piggin Cc: Peter Xu Cc: Vlastimil Babka Signed-off-by: Andrew Morton

mm: introduce arch_has_hw_nonleaf_pmd_young()

2022-11-30T22:49:41Z

When running as a Xen PV guests commit eed9a328aa1a ("mm: x86: add CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG") can cause a protection violation in pmdp_test_and_clear_young(): BUG: unable to handle page fault for address: ffff8880083374d0 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD 3026067 P4D 3026067 PUD 3027067 PMD 7fee5067 PTE 8010000008337065 Oops: 0003 [#1] PREEMPT SMP NOPTI CPU: 7 PID: 158 Comm: kswapd0 Not tainted 6.1.0-rc5-20221118-doflr+ #1 RIP: e030:pmdp_test_and_clear_young+0x25/0x40 This happens because the Xen hypervisor can't emulate direct writes to page table entries other than PTEs. This can easily be fixed by introducing arch_has_hw_nonleaf_pmd_young() similar to arch_has_hw_pte_young() and test that instead of CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG. Link: https://lkml.kernel.org/r/20221123064510.16225-1-jgross@suse.com Fixes: eed9a328aa1a ("mm: x86: add CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG") Signed-off-by: Juergen Gross Reported-by: Sander Eikelenboom Acked-by: Yu Zhao Tested-by: Sander Eikelenboom Acked-by: David Hildenbrand [core changes] Signed-off-by: Andrew Morton

mm: add dummy pmd_young() for architectures not having it

2022-11-30T22:49:41Z

In order to avoid #ifdeffery add a dummy pmd_young() implementation as a fallback. This is required for the later patch "mm: introduce arch_has_hw_nonleaf_pmd_young()". Link: https://lkml.kernel.org/r/fd3ac3cd-7349-6bbd-890a-71a9454ca0b3@suse.com Signed-off-by: Juergen Gross Acked-by: Yu Zhao Cc: Borislav Petkov Cc: Dave Hansen Cc: Geert Uytterhoeven Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Sander Eikelenboom Cc: Thomas Gleixner Signed-off-by: Andrew Morton