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https://github.com/edk2-porting/linux-next.git
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fa5fd7c628
- Support for a separate IRQ stack, although we haven't reduced the size of our thread stack just yet since we don't have enough data to determine a safe value - Refactoring of our EFI initialisation and runtime code into drivers/firmware/efi/ so that it can be reused by arch/arm/. - Ftrace improvements when unwinding in the function graph tracer - Document our silicon errata handling process - Cache flushing optimisation when mapping executable pages - Support for hugetlb mappings using the contiguous hint in the pte -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABCgAGBQJWj+pFAAoJELescNyEwWM0/V8IALu8i2d6LijVICyZ/MH6pK+F krbkIjdKFmIoFqo8HolCDMDqWfdzCLW671iYmks1DYVqM0Q5SXRa1rIzMw1Nbd3s PzHS8qvnJFGtjXgwX5yxcyA5nU5hG5/mHJ8tbEg4zlQXvGONU6rZOlt4xY3ocZR7 iWmqoNX8LbPv5UgpifQ06QXEiC+4pm/BgADl2995oZfOaZ37L6c0oh6VcxQWyEf8 7OFRYtwruNyX2S5zJkL41Rh8gFAL9/j7lrHt2D+cxHR58X+qiRYKTjxkwJUt6i3E ROZROsdQpyHojIIIYZEfNCZWjV0NwSghQfCnbsDwxVkkVeY414UXIno8JV4MyCk= =JHvb -----END PGP SIGNATURE----- Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Will Deacon: "Here is the core arm64 queue for 4.5. As you might expect, the Christmas break resulted in a number of patches not making the final cut, so 4.6 is likely to be larger than usual. There's still some useful stuff here, however, and it's detailed below. The EFI changes have been Reviewed-by Matt and the memblock change got an "OK" from akpm. Summary: - Support for a separate IRQ stack, although we haven't reduced the size of our thread stack just yet since we don't have enough data to determine a safe value - Refactoring of our EFI initialisation and runtime code into drivers/firmware/efi/ so that it can be reused by arch/arm/. - Ftrace improvements when unwinding in the function graph tracer - Document our silicon errata handling process - Cache flushing optimisation when mapping executable pages - Support for hugetlb mappings using the contiguous hint in the pte" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (45 commits) arm64: head.S: use memset to clear BSS efi: stub: define DISABLE_BRANCH_PROFILING for all architectures arm64: entry: remove pointless SPSR mode check arm64: mm: move pgd_cache initialisation to pgtable_cache_init arm64: module: avoid undefined shift behavior in reloc_data() arm64: module: fix relocation of movz instruction with negative immediate arm64: traps: address fallout from printk -> pr_* conversion arm64: ftrace: fix a stack tracer's output under function graph tracer arm64: pass a task parameter to unwind_frame() arm64: ftrace: modify a stack frame in a safe way arm64: remove irq_count and do_softirq_own_stack() arm64: hugetlb: add support for PTE contiguous bit arm64: Use PoU cache instr for I/D coherency arm64: Defer dcache flush in __cpu_copy_user_page arm64: reduce stack use in irq_handler arm64: mm: ensure that the zero page is visible to the page table walker arm64: Documentation: add list of software workarounds for errata arm64: mm: place __cpu_setup in .text arm64: cmpxchg: Don't incldue linux/mmdebug.h arm64: mm: fold alternatives into .init ...
191 lines
4.2 KiB
ArmAsm
191 lines
4.2 KiB
ArmAsm
/*
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* ld script to make ARM Linux kernel
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* taken from the i386 version by Russell King
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* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
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*/
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#include <asm-generic/vmlinux.lds.h>
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#include <asm/cache.h>
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#include <asm/kernel-pgtable.h>
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#include <asm/thread_info.h>
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#include <asm/memory.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include "image.h"
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/* .exit.text needed in case of alternative patching */
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#define ARM_EXIT_KEEP(x) x
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#define ARM_EXIT_DISCARD(x)
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OUTPUT_ARCH(aarch64)
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ENTRY(_text)
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jiffies = jiffies_64;
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#define HYPERVISOR_TEXT \
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/* \
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* Align to 4 KB so that \
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* a) the HYP vector table is at its minimum \
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* alignment of 2048 bytes \
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* b) the HYP init code will not cross a page \
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* boundary if its size does not exceed \
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* 4 KB (see related ASSERT() below) \
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*/ \
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. = ALIGN(SZ_4K); \
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VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \
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*(.hyp.idmap.text) \
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VMLINUX_SYMBOL(__hyp_idmap_text_end) = .; \
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VMLINUX_SYMBOL(__hyp_text_start) = .; \
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*(.hyp.text) \
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VMLINUX_SYMBOL(__hyp_text_end) = .;
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#define IDMAP_TEXT \
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. = ALIGN(SZ_4K); \
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VMLINUX_SYMBOL(__idmap_text_start) = .; \
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*(.idmap.text) \
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VMLINUX_SYMBOL(__idmap_text_end) = .;
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/*
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* The size of the PE/COFF section that covers the kernel image, which
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* runs from stext to _edata, must be a round multiple of the PE/COFF
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* FileAlignment, which we set to its minimum value of 0x200. 'stext'
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* itself is 4 KB aligned, so padding out _edata to a 0x200 aligned
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* boundary should be sufficient.
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*/
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PECOFF_FILE_ALIGNMENT = 0x200;
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#ifdef CONFIG_EFI
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#define PECOFF_EDATA_PADDING \
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.pecoff_edata_padding : { BYTE(0); . = ALIGN(PECOFF_FILE_ALIGNMENT); }
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#else
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#define PECOFF_EDATA_PADDING
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#endif
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#if defined(CONFIG_DEBUG_ALIGN_RODATA)
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#define ALIGN_DEBUG_RO . = ALIGN(1<<SECTION_SHIFT);
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#define ALIGN_DEBUG_RO_MIN(min) ALIGN_DEBUG_RO
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#elif defined(CONFIG_DEBUG_RODATA)
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#define ALIGN_DEBUG_RO . = ALIGN(1<<PAGE_SHIFT);
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#define ALIGN_DEBUG_RO_MIN(min) ALIGN_DEBUG_RO
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#else
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#define ALIGN_DEBUG_RO
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#define ALIGN_DEBUG_RO_MIN(min) . = ALIGN(min);
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#endif
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SECTIONS
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{
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/*
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* XXX: The linker does not define how output sections are
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* assigned to input sections when there are multiple statements
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* matching the same input section name. There is no documented
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* order of matching.
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*/
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/DISCARD/ : {
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ARM_EXIT_DISCARD(EXIT_TEXT)
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ARM_EXIT_DISCARD(EXIT_DATA)
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EXIT_CALL
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*(.discard)
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*(.discard.*)
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}
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. = PAGE_OFFSET + TEXT_OFFSET;
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.head.text : {
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_text = .;
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HEAD_TEXT
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}
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ALIGN_DEBUG_RO
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.text : { /* Real text segment */
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_stext = .; /* Text and read-only data */
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__exception_text_start = .;
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*(.exception.text)
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__exception_text_end = .;
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IRQENTRY_TEXT
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TEXT_TEXT
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SCHED_TEXT
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LOCK_TEXT
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HYPERVISOR_TEXT
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IDMAP_TEXT
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*(.fixup)
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*(.gnu.warning)
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. = ALIGN(16);
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*(.got) /* Global offset table */
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}
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RO_DATA(PAGE_SIZE)
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EXCEPTION_TABLE(8)
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NOTES
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ALIGN_DEBUG_RO
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_etext = .; /* End of text and rodata section */
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ALIGN_DEBUG_RO_MIN(PAGE_SIZE)
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__init_begin = .;
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INIT_TEXT_SECTION(8)
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.exit.text : {
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ARM_EXIT_KEEP(EXIT_TEXT)
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}
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.init.data : {
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INIT_DATA
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INIT_SETUP(16)
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INIT_CALLS
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CON_INITCALL
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SECURITY_INITCALL
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INIT_RAM_FS
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}
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.exit.data : {
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ARM_EXIT_KEEP(EXIT_DATA)
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}
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PERCPU_SECTION(L1_CACHE_BYTES)
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. = ALIGN(4);
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.altinstructions : {
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__alt_instructions = .;
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*(.altinstructions)
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__alt_instructions_end = .;
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}
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.altinstr_replacement : {
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*(.altinstr_replacement)
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}
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. = ALIGN(PAGE_SIZE);
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__init_end = .;
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_data = .;
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_sdata = .;
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RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
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PECOFF_EDATA_PADDING
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_edata = .;
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BSS_SECTION(0, 0, 0)
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. = ALIGN(PAGE_SIZE);
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idmap_pg_dir = .;
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. += IDMAP_DIR_SIZE;
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swapper_pg_dir = .;
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. += SWAPPER_DIR_SIZE;
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_end = .;
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STABS_DEBUG
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HEAD_SYMBOLS
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}
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/*
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* The HYP init code and ID map text can't be longer than a page each,
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* and should not cross a page boundary.
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*/
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ASSERT(__hyp_idmap_text_end - (__hyp_idmap_text_start & ~(SZ_4K - 1)) <= SZ_4K,
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"HYP init code too big or misaligned")
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ASSERT(__idmap_text_end - (__idmap_text_start & ~(SZ_4K - 1)) <= SZ_4K,
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"ID map text too big or misaligned")
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/*
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* If padding is applied before .head.text, virt<->phys conversions will fail.
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*/
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ASSERT(_text == (PAGE_OFFSET + TEXT_OFFSET), "HEAD is misaligned")
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