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OpenCloudOS-Kernel/arch/x86/mm
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Sean Christopherson 643d95aac5 Revert "x86/mm: Introduce lookup_address_in_mm()" 
Drop lookup_address_in_mm() now that KVM is providing it's own variant
of lookup_address_in_pgd() that is safe for use with user addresses, e.g.
guards against page tables being torn down.  A variant that provides a
non-init mm is inherently dangerous and flawed, as the only reason to use
an mm other than init_mm is to walk a userspace mapping, and
lookup_address_in_pgd() does not play nice with userspace mappings, e.g.
doesn't disable IRQs to block TLB shootdowns and doesn't use READ_ONCE()
to ensure an upper level entry isn't converted to a huge page between
checking the PAGE_SIZE bit and grabbing the address of the next level
down.

This reverts commit 13c72c060f.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <YmwIi3bXr/1yhYV/@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 		2022-04-29 12:40:41 -04:00
..
pat Revert "x86/mm: Introduce lookup_address_in_mm()" 2022-04-29 12:40:41 -04:00
Makefile x86/sev: Move common memory encryption code to mem_encrypt.c 2021-12-08 16:49:53 +01:00
amdtopology.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
cpu_entry_area.c x86/sev: Make the #VC exception stacks part of the default stacks storage 2021-10-06 21:48:27 +02:00
debug_pagetables.c mm: introduce include/linux/pgtable.h 2020-06-09 09:39:13 -07:00
dump_pagetables.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
extable.c x86/entry_32: Fix segment exceptions 2022-01-12 16:38:25 +01:00
fault.c mm: remove redundant check about FAULT_FLAG_ALLOW_RETRY bit 2022-01-15 16:30:27 +02:00
highmem_32.c x86/mm/highmem: Use generic kmap atomic implementation 2020-11-06 23:14:55 +01:00
hugetlbpage.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
ident_map.c x86/mm/ident_map: Check for errors from ident_pud_init() 2020-10-28 14:48:30 +01:00
init.c mm/migration: add trace events for base page and HugeTLB migrations 2022-03-24 19:06:45 -07:00
init_32.c x86: mm: rename __is_kernel_text() to is_x86_32_kernel_text() 2021-11-09 10:02:51 -08:00
init_64.c bootmem: Use page->index instead of page->freelist 2022-01-06 12:27:03 +01:00
iomap_32.c io-mapping: Cleanup atomic iomap 2020-11-06 23:14:58 +01:00
ioremap.c x86/boot: Add setup_indirect support in early_memremap_is_setup_data() 2022-03-09 12:49:46 +01:00
kasan_init_64.c memblock: use memblock_free for freeing virtual pointers 2021-11-06 13:30:41 -07:00
kaslr.c x86: Fix various typos in comments 2021-03-18 15:31:53 +01:00
kmmio.c x86: Fix various typos in comments 2021-03-18 15:31:53 +01:00
maccess.c x86: Share definition of __is_canonical_address() 2022-02-02 13:11:42 +01:00
mem_encrypt.c x86/sev: Move common memory encryption code to mem_encrypt.c 2021-12-08 16:49:53 +01:00
mem_encrypt_amd.c x86/mm/cpa: Generalize __set_memory_enc_pgtable() 2022-02-23 19:14:29 +01:00
mem_encrypt_boot.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
mem_encrypt_identity.c x86/coco: Add API to handle encryption mask 2022-02-23 19:14:29 +01:00
mm_internal.h x86/mm: thread pgprot_t through init_memory_mapping() 2020-04-10 15:36:21 -07:00
mmap.c x86/mm/mmap: Fix -Wmissing-prototypes warnings 2020-04-22 20:19:48 +02:00
mmio-mod.c x86/mmiotrace: Replace deprecated CPU-hotplug functions. 2021-08-10 14:46:27 +02:00
numa.c arch/x86/mm/numa: Do not initialize nodes twice 2022-03-22 15:57:06 -07:00
numa_32.c x86/mm: Drop deprecated DISCONTIGMEM support for 32-bit 2020-05-28 18:34:30 +02:00
numa_64.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
numa_emulation.c memblock: use memblock_free for freeing virtual pointers 2021-11-06 13:30:41 -07:00
numa_internal.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pf_in.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pf_in.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pgtable.c Revert "mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge" 2021-07-21 11:28:09 +01:00
pgtable_32.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
physaddr.c mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions 2019-12-10 10:12:55 +01:00
physaddr.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pkeys.c Fixes and improvements for FPU handling on x86: 2021-07-07 11:12:01 -07:00
pti.c x86/process/64: Move cpu_current_top_of_stack out of TSS 2021-03-28 22:40:10 +02:00
setup_nx.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
srat.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
testmmiotrace.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
tlb.c x86/mm/tlb: Revert retpoline avoidance approach 2022-04-04 19:41:36 +02:00