summaryrefslogtreecommitdiff
path: root/arch/x86/kernel/traps.c
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2020-05-28 17:53:19 +0300
committerThomas Gleixner <tglx@linutronix.de>2020-06-11 16:15:26 +0300
commit00229a54300108502f68c8777faca2d13f805f1a (patch)
tree5b676d21a17bbcc73c337fca26bb5c9cd50d28a7 /arch/x86/kernel/traps.c
parent5a2bafca1b0675a126143eea3610143130347783 (diff)
downloadlinux-00229a54300108502f68c8777faca2d13f805f1a.tar.xz
x86/idt: Cleanup trap_init()
No point in having all the IDT cruft in trap_init(). Move it into the IDT code and fixup the comments. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20200528145522.992376498@linutronix.de
Diffstat (limited to 'arch/x86/kernel/traps.c')
-rw-r--r--arch/x86/kernel/traps.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 79af913e78a3..5566fe50ef98 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -1056,15 +1056,6 @@ void __init trap_init(void)
idt_setup_traps();
/*
- * Set the IDT descriptor to a fixed read-only location, so that the
- * "sidt" instruction will not leak the location of the kernel, and
- * to defend the IDT against arbitrary memory write vulnerabilities.
- * It will be reloaded in cpu_init() */
- cea_set_pte(CPU_ENTRY_AREA_RO_IDT_VADDR, __pa_symbol(idt_table),
- PAGE_KERNEL_RO);
- idt_descr.address = CPU_ENTRY_AREA_RO_IDT;
-
- /*
* Should be a barrier for any external CPU state:
*/
cpu_init();