mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-29 17:25:38 +00:00
2f681ba4b3
This selects the THREAD_INFO_IN_TASK option for UM and changes the way that the current task is discovered. This is trivial though, as UML already tracks the current task in cpu_tasks[] and this can be used to retrieve it. Also remove the signal handler code that copies the thread information into the IRQ stack. It is obsolete now, which also means that the mentioned race condition cannot happen anymore. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: Hajime Tazaki <thehajime@gmail.com> Link: https://patch.msgid.link/20241111102910.46512-1-benjamin@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com>
120 lines
2.5 KiB
ArmAsm
120 lines
2.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include <asm/vmlinux.lds.h>
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#include <asm/page.h>
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OUTPUT_FORMAT(ELF_FORMAT)
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OUTPUT_ARCH(ELF_ARCH)
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ENTRY(_start)
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jiffies = jiffies_64;
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VERSION {
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{
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local: *;
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};
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}
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SECTIONS
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{
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/* This must contain the right address - not quite the default ELF one.*/
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PROVIDE (__executable_start = START);
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/* Static binaries stick stuff here, like the sigreturn trampoline,
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* invisibly to objdump. So, just make __binary_start equal to the very
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* beginning of the executable, and if there are unmapped pages after this,
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* they are forever unusable.
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*/
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__binary_start = START;
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. = START + SIZEOF_HEADERS;
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. = ALIGN(PAGE_SIZE);
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_text = .;
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INIT_TEXT_SECTION(0)
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.text :
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{
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_stext = .;
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TEXT_TEXT
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SCHED_TEXT
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LOCK_TEXT
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IRQENTRY_TEXT
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SOFTIRQENTRY_TEXT
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*(.fixup)
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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*(.gnu.linkonce.t*)
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}
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. = ALIGN(PAGE_SIZE);
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.syscall_stub : {
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__syscall_stub_start = .;
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*(.__syscall_stub*)
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__syscall_stub_end = .;
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}
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/*
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* These are needed even in a static link, even if they wind up being empty.
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* Newer glibc needs these __rel{,a}_iplt_{start,end} symbols.
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*/
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.rel.plt : {
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*(.rel.plt)
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PROVIDE_HIDDEN(__rel_iplt_start = .);
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*(.rel.iplt)
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PROVIDE_HIDDEN(__rel_iplt_end = .);
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}
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.rela.plt : {
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*(.rela.plt)
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PROVIDE_HIDDEN(__rela_iplt_start = .);
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*(.rela.iplt)
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PROVIDE_HIDDEN(__rela_iplt_end = .);
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}
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#include <asm/common.lds.S>
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__init_begin = .;
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init.data : { INIT_DATA }
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__init_end = .;
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.data :
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{
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INIT_TASK_DATA(KERNEL_STACK_SIZE)
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DATA_DATA
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*(.gnu.linkonce.d*)
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CONSTRUCTORS
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}
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.data1 : { *(.data1) }
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.ctors :
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{
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*(.ctors)
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}
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.dtors :
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{
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*(.dtors)
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}
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.got : { *(.got.plt) *(.got) }
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.eh_frame : { KEEP (*(.eh_frame)) }
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.dynamic : { *(.dynamic) }
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.tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
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.tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
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/* We want the small data sections together, so single-instruction offsets
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can access them all, and initialized data all before uninitialized, so
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we can shorten the on-disk segment size. */
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.sdata : { *(.sdata) }
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_edata = .;
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PROVIDE (edata = .);
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. = ALIGN(PAGE_SIZE);
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__bss_start = .;
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PROVIDE(_bss_start = .);
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SBSS(0)
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BSS(0)
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__bss_stop = .;
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_end = .;
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PROVIDE (end = .);
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STABS_DEBUG
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DWARF_DEBUG
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ELF_DETAILS
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DISCARDS
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}
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