[tip:x86/urgent] x86/irq/64: Update stale comment

[tip-bot for Cao jin]

Commit-ID:  385065734cd417b9d7739b2ebb62c960aeb3ccb5
Gitweb:     https://git.kernel.org/tip/385065734cd417b9d7739b2ebb62c960aeb3ccb5
Author:     Cao jin <caoj.fnst@xxxxxxxxxxxxxx>
AuthorDate: Fri, 19 Jul 2019 16:16:35 +0800
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 22 Jul 2019 10:54:27 +0200

x86/irq/64: Update stale comment

Commit e6401c130931 ("x86/irq/64: Split the IRQ stack into its own pages")
missed to update one piece of comment as it did to its peer in Xen, which
will confuse people who still need to read comment.

Signed-off-by: Cao jin <caoj.fnst@xxxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20190719081635.26528-1-caoj.fnst@xxxxxxxxxxxxxx

---
 arch/x86/kernel/head_64.S | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index a6342c899be5..f3d3e9646a99 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -193,10 +193,10 @@ ENTRY(secondary_startup_64)
 
 	/* Set up %gs.
 	 *
-	 * The base of %gs always points to the bottom of the irqstack
-	 * union.  If the stack protector canary is enabled, it is
-	 * located at %gs:40.  Note that, on SMP, the boot cpu uses
-	 * init data section till per cpu areas are set up.
+	 * The base of %gs always points to fixed_percpu_data. If the
+	 * stack protector canary is enabled, it is located at %gs:40.
+	 * Note that, on SMP, the boot cpu uses init data section until
+	 * the per cpu areas are set up.
 	 */
 	movl	$MSR_GS_BASE,%ecx
 	movl	initial_gs(%rip),%eax