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 It is obsolete now, which also means that the mentioned race condition cannot happen anymore.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>
182 lines
5.3 KiB
ArmAsm
182 lines
5.3 KiB
ArmAsm
#include <asm/vmlinux.lds.h>
|
|
#include <asm/page.h>
|
|
|
|
OUTPUT_FORMAT(ELF_FORMAT)
|
|
OUTPUT_ARCH(ELF_ARCH)
|
|
ENTRY(_start)
|
|
jiffies = jiffies_64;
|
|
|
|
VERSION {
|
|
{
|
|
local: *;
|
|
};
|
|
}
|
|
|
|
SECTIONS
|
|
{
|
|
PROVIDE (__executable_start = START);
|
|
. = START + SIZEOF_HEADERS;
|
|
.interp : { *(.interp) }
|
|
__binary_start = .;
|
|
. = ALIGN(4096); /* Init code and data */
|
|
_text = .;
|
|
INIT_TEXT_SECTION(PAGE_SIZE)
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
|
|
/* Read-only sections, merged into text segment: */
|
|
.hash : { *(.hash) }
|
|
.gnu.hash : { *(.gnu.hash) }
|
|
.dynsym : { *(.dynsym) }
|
|
.dynstr : { *(.dynstr) }
|
|
.gnu.version : { *(.gnu.version) }
|
|
.gnu.version_d : { *(.gnu.version_d) }
|
|
.gnu.version_r : { *(.gnu.version_r) }
|
|
.rel.init : { *(.rel.init) }
|
|
.rela.init : { *(.rela.init) }
|
|
.rel.text : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
|
|
.rela.text : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
|
|
.rel.fini : { *(.rel.fini) }
|
|
.rela.fini : { *(.rela.fini) }
|
|
.rel.rodata : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
|
|
.rela.rodata : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
|
|
.rel.data : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
|
|
.rela.data : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
|
|
.rel.tdata : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
|
|
.rela.tdata : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
|
|
.rel.tbss : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
|
|
.rela.tbss : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
|
|
.rel.ctors : { *(.rel.ctors) }
|
|
.rela.ctors : { *(.rela.ctors) }
|
|
.rel.dtors : { *(.rel.dtors) }
|
|
.rela.dtors : { *(.rela.dtors) }
|
|
.rel.got : { *(.rel.got) }
|
|
.rela.got : { *(.rela.got) }
|
|
.rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
|
|
.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
|
|
.rel.plt : {
|
|
*(.rel.plt)
|
|
PROVIDE_HIDDEN(__rel_iplt_start = .);
|
|
*(.rel.iplt)
|
|
PROVIDE_HIDDEN(__rel_iplt_end = .);
|
|
}
|
|
.rela.plt : {
|
|
*(.rela.plt)
|
|
PROVIDE_HIDDEN(__rela_iplt_start = .);
|
|
*(.rela.iplt)
|
|
PROVIDE_HIDDEN(__rela_iplt_end = .);
|
|
}
|
|
.init : {
|
|
KEEP (*(.init))
|
|
} =0x90909090
|
|
.plt : { *(.plt) }
|
|
.text : {
|
|
_stext = .;
|
|
TEXT_TEXT
|
|
SCHED_TEXT
|
|
LOCK_TEXT
|
|
IRQENTRY_TEXT
|
|
SOFTIRQENTRY_TEXT
|
|
*(.fixup)
|
|
*(.stub .text.* .gnu.linkonce.t.*)
|
|
/* .gnu.warning sections are handled specially by elf32.em. */
|
|
*(.gnu.warning)
|
|
|
|
. = ALIGN(PAGE_SIZE);
|
|
} =0x90909090
|
|
. = ALIGN(PAGE_SIZE);
|
|
.syscall_stub : {
|
|
__syscall_stub_start = .;
|
|
*(.__syscall_stub*)
|
|
__syscall_stub_end = .;
|
|
}
|
|
.fini : {
|
|
KEEP (*(.fini))
|
|
} =0x90909090
|
|
|
|
.kstrtab : { *(.kstrtab) }
|
|
|
|
#include <asm/common.lds.S>
|
|
|
|
__init_begin = .;
|
|
init.data : { INIT_DATA }
|
|
__init_end = .;
|
|
|
|
/* Ensure the __preinit_array_start label is properly aligned. We
|
|
could instead move the label definition inside the section, but
|
|
the linker would then create the section even if it turns out to
|
|
be empty, which isn't pretty. */
|
|
. = ALIGN(32 / 8);
|
|
.preinit_array : { *(.preinit_array) }
|
|
.init_array : {
|
|
*(.kasan_init)
|
|
*(.init_array.*)
|
|
*(.init_array)
|
|
}
|
|
.fini_array : { *(.fini_array) }
|
|
.data : {
|
|
INIT_TASK_DATA(KERNEL_STACK_SIZE)
|
|
DATA_DATA
|
|
*(.data.* .gnu.linkonce.d.*)
|
|
SORT(CONSTRUCTORS)
|
|
}
|
|
.data1 : { *(.data1) }
|
|
.tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
|
|
.tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
|
|
.eh_frame : { KEEP (*(.eh_frame)) }
|
|
.gcc_except_table : { *(.gcc_except_table) }
|
|
.dynamic : { *(.dynamic) }
|
|
.ctors : {
|
|
/* gcc uses crtbegin.o to find the start of
|
|
the constructors, so we make sure it is
|
|
first. Because this is a wildcard, it
|
|
doesn't matter if the user does not
|
|
actually link against crtbegin.o; the
|
|
linker won't look for a file to match a
|
|
wildcard. The wildcard also means that it
|
|
doesn't matter which directory crtbegin.o
|
|
is in. */
|
|
KEEP (*crtbegin.o(.ctors))
|
|
/* We don't want to include the .ctor section from
|
|
from the crtend.o file until after the sorted ctors.
|
|
The .ctor section from the crtend file contains the
|
|
end of ctors marker and it must be last */
|
|
KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))
|
|
KEEP (*(SORT(.ctors.*)))
|
|
KEEP (*(.ctors))
|
|
}
|
|
.dtors : {
|
|
KEEP (*crtbegin.o(.dtors))
|
|
KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
|
|
KEEP (*(SORT(.dtors.*)))
|
|
KEEP (*(.dtors))
|
|
}
|
|
.jcr : { KEEP (*(.jcr)) }
|
|
.got : { *(.got.plt) *(.got) }
|
|
_edata = .;
|
|
PROVIDE (edata = .);
|
|
.bss : {
|
|
__bss_start = .;
|
|
*(.dynbss)
|
|
*(.bss .bss.* .gnu.linkonce.b.*)
|
|
*(COMMON)
|
|
/* Align here to ensure that the .bss section occupies space up to
|
|
_end. Align after .bss to ensure correct alignment even if the
|
|
.bss section disappears because there are no input sections. */
|
|
. = ALIGN(32 / 8);
|
|
. = ALIGN(32 / 8);
|
|
}
|
|
__bss_stop = .;
|
|
_end = .;
|
|
PROVIDE (end = .);
|
|
|
|
STABS_DEBUG
|
|
DWARF_DEBUG
|
|
ELF_DETAILS
|
|
|
|
DISCARDS
|
|
}
|
|
|
|
ASSERT(__syscall_stub_end - __syscall_stub_start <= PAGE_SIZE,
|
|
"STUB code must not be larger than one page");
|