linux-kernel - [patch V2 22/29] x86/irq/32: Make irq stack a character array

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 05 Apr 2019 17:07:20 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, Andy Lutomirski <luto@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>
Subject: [patch V2 22/29] x86/irq/32: Make irq stack a character array

There is no reason to have an u32 array in struct irq_stack. The only
purpose of the array is to size the struct properly.

Preparatory change for sharing struct irq_stack with 64-bit.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/include/asm/processor.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -422,7 +422,7 @@ DECLARE_PER_CPU_ALIGNED(struct stack_can
  * per-CPU IRQ handling stacks
  */
 struct irq_stack {
-	u32			stack[IRQ_STACK_SIZE / sizeof(u32)];
+	char			stack[IRQ_STACK_SIZE];
 } __aligned(IRQ_STACK_SIZE);
 
 DECLARE_PER_CPU(struct irq_stack *, hardirq_stack);