linux_dsm_epyc7002/arch/ia64/kernel/vmlinux.lds.S
Kees Cook 9b30e704dd ia64: Move EXCEPTION_TABLE to RO_DATA segment
Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-alpha@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-ia64@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: x86-ml <x86@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: https://lkml.kernel.org/r/20191029211351.13243-22-keescook@chromium.org
2019-11-04 18:14:41 +01:00

223 lines
4.2 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0 */
#include <asm/cache.h>
#include <asm/ptrace.h>
#include <asm/pgtable.h>
#include <asm/thread_info.h>
#define EMITS_PT_NOTE
#define RO_EXCEPTION_TABLE_ALIGN 16
#include <asm-generic/vmlinux.lds.h>
OUTPUT_FORMAT("elf64-ia64-little")
OUTPUT_ARCH(ia64)
ENTRY(phys_start)
jiffies = jiffies_64;
PHDRS {
text PT_LOAD;
percpu PT_LOAD;
data PT_LOAD;
note PT_NOTE;
unwind 0x70000001; /* PT_IA_64_UNWIND, but ld doesn't match the name */
}
SECTIONS {
/*
* unwind exit sections must be discarded before
* the rest of the sections get included.
*/
/DISCARD/ : {
*(.IA_64.unwind.exit.text)
*(.IA_64.unwind_info.exit.text)
*(.comment)
*(.note)
}
v = PAGE_OFFSET; /* this symbol is here to make debugging easier... */
phys_start = _start - LOAD_OFFSET;
code : {
} :text
. = KERNEL_START;
_text = .;
_stext = .;
.text : AT(ADDR(.text) - LOAD_OFFSET) {
__start_ivt_text = .;
*(.text..ivt)
__end_ivt_text = .;
TEXT_TEXT
SCHED_TEXT
CPUIDLE_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.gnu.linkonce.t*)
}
.text2 : AT(ADDR(.text2) - LOAD_OFFSET) {
*(.text2)
}
#ifdef CONFIG_SMP
.text..lock : AT(ADDR(.text..lock) - LOAD_OFFSET) {
*(.text..lock)
}
#endif
_etext = .;
/*
* Read-only data
*/
/* MCA table */
. = ALIGN(16);
__mca_table : AT(ADDR(__mca_table) - LOAD_OFFSET) {
__start___mca_table = .;
*(__mca_table)
__stop___mca_table = .;
}
.data..patch.phys_stack_reg : AT(ADDR(.data..patch.phys_stack_reg) - LOAD_OFFSET) {
__start___phys_stack_reg_patchlist = .;
*(.data..patch.phys_stack_reg)
__end___phys_stack_reg_patchlist = .;
}
/*
* Global data
*/
_data = .;
/* Unwind info & table: */
. = ALIGN(8);
.IA_64.unwind_info : AT(ADDR(.IA_64.unwind_info) - LOAD_OFFSET) {
*(.IA_64.unwind_info*)
}
.IA_64.unwind : AT(ADDR(.IA_64.unwind) - LOAD_OFFSET) {
__start_unwind = .;
*(.IA_64.unwind*)
__end_unwind = .;
} :text :unwind
code_continues2 : {
} :text
RO_DATA(4096)
.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
__start_opd = .;
*(.opd)
__end_opd = .;
}
/*
* Initialization code and data:
*/
. = ALIGN(PAGE_SIZE);
__init_begin = .;
INIT_TEXT_SECTION(PAGE_SIZE)
INIT_DATA_SECTION(16)
.data..patch.vtop : AT(ADDR(.data..patch.vtop) - LOAD_OFFSET) {
__start___vtop_patchlist = .;
*(.data..patch.vtop)
__end___vtop_patchlist = .;
}
.data..patch.rse : AT(ADDR(.data..patch.rse) - LOAD_OFFSET) {
__start___rse_patchlist = .;
*(.data..patch.rse)
__end___rse_patchlist = .;
}
.data..patch.mckinley_e9 : AT(ADDR(.data..patch.mckinley_e9) - LOAD_OFFSET) {
__start___mckinley_e9_bundles = .;
*(.data..patch.mckinley_e9)
__end___mckinley_e9_bundles = .;
}
#ifdef CONFIG_SMP
. = ALIGN(PERCPU_PAGE_SIZE);
__cpu0_per_cpu = .;
. = . + PERCPU_PAGE_SIZE; /* cpu0 per-cpu space */
#endif
. = ALIGN(PAGE_SIZE);
__init_end = .;
.data..page_aligned : AT(ADDR(.data..page_aligned) - LOAD_OFFSET) {
PAGE_ALIGNED_DATA(PAGE_SIZE)
. = ALIGN(PAGE_SIZE);
__start_gate_section = .;
*(.data..gate)
__stop_gate_section = .;
}
/*
* make sure the gate page doesn't expose
* kernel data
*/
. = ALIGN(PAGE_SIZE);
/* Per-cpu data: */
. = ALIGN(PERCPU_PAGE_SIZE);
PERCPU_VADDR(SMP_CACHE_BYTES, PERCPU_ADDR, :percpu)
__phys_per_cpu_start = __per_cpu_load;
/*
* ensure percpu data fits
* into percpu page size
*/
. = __phys_per_cpu_start + PERCPU_PAGE_SIZE;
data : {
} :data
.data : AT(ADDR(.data) - LOAD_OFFSET) {
_sdata = .;
INIT_TASK_DATA(PAGE_SIZE)
CACHELINE_ALIGNED_DATA(SMP_CACHE_BYTES)
READ_MOSTLY_DATA(SMP_CACHE_BYTES)
DATA_DATA
*(.data1)
*(.gnu.linkonce.d*)
CONSTRUCTORS
}
BUG_TABLE
. = ALIGN(16); /* gp must be 16-byte aligned for exc. table */
.got : AT(ADDR(.got) - LOAD_OFFSET) {
*(.got.plt)
*(.got)
}
__gp = ADDR(.got) + 0x200000;
/*
* We want the small data sections together,
* so single-instruction offsets can access
* them all, and initialized data all before
* uninitialized, so we can shorten the
* on-disk segment size.
*/
.sdata : AT(ADDR(.sdata) - LOAD_OFFSET) {
*(.sdata)
*(.sdata1)
*(.srdata)
}
_edata = .;
BSS_SECTION(0, 0, 0)
_end = .;
code : {
} :text
STABS_DEBUG
DWARF_DEBUG
/* Default discards */
DISCARDS
}