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
| ||
|
Date: Sun, 26 Sep 2021 23:08:01 +0800 From: Lai Jiangshan <jiangshanlai@...il.com> To: linux-kernel@...r.kernel.org Cc: Lai Jiangshan <laijs@...ux.alibaba.com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>, Juergen Gross <jgross@...e.com>, "Peter Zijlstra (Intel)" <peterz@...radead.org>, Joerg Roedel <jroedel@...e.de>, Mike Travis <mike.travis@....com> Subject: [PATCH V2 04/41] x86/entry: Introduce __entry_text for entry code written in C From: Lai Jiangshan <laijs@...ux.alibaba.com> Some entry code will be implemented in C files. We need __entry_text to set them in .entry.text section. __entry_text disables instruments like noinstr, but it doesn't disable stack protector since not all compiler supported by kernel supporting function level granular attribute to disable stack protector. It will be disabled by C file level. Signed-off-by: Lai Jiangshan <laijs@...ux.alibaba.com> --- arch/x86/include/asm/idtentry.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h index 1345088e9902..6779def97591 100644 --- a/arch/x86/include/asm/idtentry.h +++ b/arch/x86/include/asm/idtentry.h @@ -11,6 +11,9 @@ #include <asm/irq_stack.h> +/* Entry code written in C. */ +#define __entry_text __noinstr_section(".entry.text") + /** * DECLARE_IDTENTRY - Declare functions for simple IDT entry points * No error code pushed by hardware -- 2.19.1.6.gb485710b
Powered by blists - more mailing lists