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From: "Hou Wenlong" <houwenlong.hwl@antgroup.com>
To: linux-kernel@vger.kernel.org
Cc: "Thomas Garnier" <thgarnie@chromium.org>,
"Lai Jiangshan" <jiangshan.ljs@antgroup.com>,
"Kees Cook" <keescook@chromium.org>,
"Hou Wenlong" <houwenlong.hwl@antgroup.com>,
"Thomas Gleixner" <tglx@linutronix.de>, "Ingo Molnar" <mingo@redhat.com>,
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"Dave Hansen" <dave.hansen@linux.intel.com>, <x86@kernel.org>,
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"Sebastian Andrzej Siewior" <bigeasy@linutronix.de>,
"Arnd Bergmann" <arnd@arndb.de>
Subject: [PATCH RFC 11/43] x86/irq: Adapt assembly for PIE support
Date: Fri, 28 Apr 2023 17:50:51 +0800
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| Series |
x86/pie: Make kernel image's virtual address flexible
|
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Commit Message
Hou Wenlong
April 28, 2023, 9:50 a.m. UTC
Change the assembly options to work with pointers instead of integers.
The generated code is the same PIE just ensures input is a pointer.
Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Cc: Thomas Garnier <thgarnie@chromium.org>
Cc: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Cc: Kees Cook <keescook@chromium.org>
---
arch/x86/include/asm/irq_stack.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/irq_stack.h b/arch/x86/include/asm/irq_stack.h index 798183867d78..caba5d1d0800 100644 --- a/arch/x86/include/asm/irq_stack.h +++ b/arch/x86/include/asm/irq_stack.h @@ -93,7 +93,7 @@ "popq %%rsp \n" \ \ : "+r" (tos), ASM_CALL_CONSTRAINT \ - : [__func] "i" (func), [tos] "r" (tos) argconstr \ + : [__func] "X" (func), [tos] "r" (tos) argconstr \ : "cc", "rax", "rcx", "rdx", "rsi", "rdi", "r8", "r9", "r10", \ "memory" \ ); \