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https://github.com/torvalds/linux.git
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ff57d59200
1, Adjust build infrastructure for 32BIT/64BIT;
2, Add HIGHMEM (PKMAP and FIX_KMAP) support;
3, Show and handle CPU vulnerabilites correctly;
4, Batch the icache maintenance for jump_label;
5, Add more atomic instructions support for BPF JIT;
6, Add more features (e.g. fsession) support for BPF trampoline;
7, Some bug fixes and other small changes.
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Merge tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Adjust build infrastructure for 32BIT/64BIT
- Add HIGHMEM (PKMAP and FIX_KMAP) support
- Show and handle CPU vulnerabilites correctly
- Batch the icache maintenance for jump_label
- Add more atomic instructions support for BPF JIT
- Add more features (e.g. fsession) support for BPF trampoline
- Some bug fixes and other small changes
* tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (21 commits)
selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch
LoongArch: BPF: Add fsession support for trampolines
LoongArch: BPF: Introduce emit_store_stack_imm64() helper
LoongArch: BPF: Support up to 12 function arguments for trampoline
LoongArch: BPF: Support small struct arguments for trampoline
LoongArch: BPF: Open code and remove invoke_bpf_mod_ret()
LoongArch: BPF: Support load-acquire and store-release instructions
LoongArch: BPF: Support 8 and 16 bit read-modify-write instructions
LoongArch: BPF: Add the default case in emit_atomic() and rename it
LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR
LoongArch: Batch the icache maintenance for jump_label
LoongArch: Add flush_icache_all()/local_flush_icache_all()
LoongArch: Add spectre boundry for syscall dispatch table
LoongArch: Show CPU vulnerabilites correctly
LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist
LoongArch: Use get_random_canary() for stack canary init
LoongArch: Improve the logging of disabling KASLR
LoongArch: Align FPU register state to 32 bytes
LoongArch: Handle CONFIG_32BIT in syscall_get_arch()
LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support
...
111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#ifndef _ASM_PAGE_H
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#define _ASM_PAGE_H
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#include <linux/const.h>
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#include <asm/addrspace.h>
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#include <vdso/page.h>
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#define HPAGE_SHIFT (PAGE_SHIFT + PAGE_SHIFT - PTRLOG)
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#define HPAGE_SIZE (_AC(1, UL) << HPAGE_SHIFT)
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#define HPAGE_MASK (~(HPAGE_SIZE - 1))
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#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
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#ifndef __ASSEMBLER__
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#include <linux/kernel.h>
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#include <linux/pfn.h>
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/*
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* It's normally defined only for FLATMEM config but it's
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* used in our early mem init code for all memory models.
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* So always define it.
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*/
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#define ARCH_PFN_OFFSET PFN_UP(PHYS_OFFSET)
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extern void clear_page(void *page);
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extern void copy_page(void *to, void *from);
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#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
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extern unsigned long shm_align_mask;
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struct page;
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struct vm_area_struct;
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typedef struct { unsigned long pte; } pte_t;
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#define pte_val(x) ((x).pte)
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#define __pte(x) ((pte_t) { (x) })
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typedef struct page *pgtable_t;
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typedef struct { unsigned long pgd; } pgd_t;
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#define pgd_val(x) ((x).pgd)
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#define __pgd(x) ((pgd_t) { (x) })
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/*
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* Manipulate page protection bits
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*/
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typedef struct { unsigned long pgprot; } pgprot_t;
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#define pgprot_val(x) ((x).pgprot)
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#define __pgprot(x) ((pgprot_t) { (x) })
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#define pte_pgprot(x) __pgprot(pte_val(x) & ~_PFN_MASK)
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#define ptep_buddy(x) ((pte_t *)((unsigned long)(x) ^ sizeof(pte_t)))
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/*
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* __pa()/__va() should be used only during mem init.
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*/
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#define __pa(x) PHYSADDR(x)
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#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET - PHYS_OFFSET))
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#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
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#define sym_to_pfn(x) __phys_to_pfn(__pa_symbol(x))
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struct page *dmw_virt_to_page(unsigned long kaddr);
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struct page *tlb_virt_to_page(unsigned long kaddr);
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#define pfn_to_phys(pfn) __pfn_to_phys(pfn)
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#define phys_to_pfn(paddr) __phys_to_pfn(paddr)
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#ifndef CONFIG_KFENCE
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#define page_to_virt(page) __va(page_to_phys(page))
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#define virt_to_page(kaddr) phys_to_page(__pa(kaddr))
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#else
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#define WANT_PAGE_VIRTUAL
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#define page_to_virt(page) \
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({ \
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extern char *__kfence_pool; \
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(__kfence_pool == NULL) ? __va(page_to_phys(page)) : page_address(page); \
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})
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#define virt_to_page(kaddr) \
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({ \
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(likely((unsigned long)kaddr < vm_map_base)) ? \
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dmw_virt_to_page((unsigned long)kaddr) : tlb_virt_to_page((unsigned long)kaddr);\
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})
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#endif
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#define pfn_to_virt(pfn) page_to_virt(pfn_to_page(pfn))
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#define virt_to_pfn(kaddr) page_to_pfn(virt_to_page(kaddr))
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extern int __virt_addr_valid(volatile void *kaddr);
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#define virt_addr_valid(kaddr) __virt_addr_valid((volatile void *)(kaddr))
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#define VMA_DATA_DEFAULT_FLAGS VMA_DATA_FLAGS_TSK_EXEC
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#include <asm-generic/memory_model.h>
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#include <asm-generic/getorder.h>
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#endif /* !__ASSEMBLER__ */
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#endif /* _ASM_PAGE_H */
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