diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0037-x86-retpoline-Avoid-retpolines-for-built-in-__init-f.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0037-x86-retpoline-Avoid-retpolines-for-built-in-__init-f.patch | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0037-x86-retpoline-Avoid-retpolines-for-built-in-__init-f.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0037-x86-retpoline-Avoid-retpolines-for-built-in-__init-f.patch deleted file mode 100644 index 846ec86f..00000000 --- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0037-x86-retpoline-Avoid-retpolines-for-built-in-__init-f.patch +++ /dev/null @@ -1,54 +0,0 @@ -From 72e87893e6f14922dcd6231a7676bac67154dae8 Mon Sep 17 00:00:00 2001 -From: David Woodhouse <dwmw@amazon.co.uk> -Date: Thu, 1 Feb 2018 11:27:20 +0000 -Subject: [PATCH 37/42] x86/retpoline: Avoid retpolines for built-in __init - functions - -(cherry picked from commit 66f793099a636862a71c59d4a6ba91387b155e0c) - -There's no point in building init code with retpolines, since it runs before -any potentially hostile userspace does. And before the retpoline is actually -ALTERNATIVEd into place, for much of it. - -Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> -Signed-off-by: Thomas Gleixner <tglx@linutronix.de> -Cc: karahmed@amazon.de -Cc: peterz@infradead.org -Cc: bp@alien8.de -Link: https://lkml.kernel.org/r/1517484441-1420-2-git-send-email-dwmw@amazon.co.uk -Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - include/linux/init.h | 9 ++++++++- - 1 file changed, 8 insertions(+), 1 deletion(-) - -diff --git a/include/linux/init.h b/include/linux/init.h -index e30104c..8e346d1 100644 ---- a/include/linux/init.h -+++ b/include/linux/init.h -@@ -4,6 +4,13 @@ - #include <linux/compiler.h> - #include <linux/types.h> - -+/* Built-in __init functions needn't be compiled with retpoline */ -+#if defined(RETPOLINE) && !defined(MODULE) -+#define __noretpoline __attribute__((indirect_branch("keep"))) -+#else -+#define __noretpoline -+#endif -+ - /* These macros are used to mark some functions or - * initialized data (doesn't apply to uninitialized data) - * as `initialization' functions. The kernel can take this -@@ -39,7 +46,7 @@ - - /* These are for everybody (although not all archs will actually - discard it in modules) */ --#define __init __section(.init.text) __cold notrace __latent_entropy -+#define __init __section(.init.text) __cold notrace __latent_entropy __noretpoline - #define __initdata __section(.init.data) - #define __initconst __section(.init.rodata) - #define __exitdata __section(.exit.data) --- -2.7.4 - |