From: Daniel Jacobowitz <drow@false.org>
Date: Thu, 29 Sep 2005 23:17:35 +0000 (+0100)
Subject: [ARM] 2941/1: Fix running legacy binaries from a soft-float root filesystem with... 
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dce79affd5d04e9cbabe35016eda55213b9b36f6;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[ARM] 2941/1: Fix running legacy binaries from a soft-float root filesystem with CONFIG_IWMMXT.

Patch from Daniel Jacobowitz

Thread flags are inherited on fork().  In order for a binary which has
the iWMMXt coprocessor enabled to run a binary which needs the FPA
emulation, we need to explicitly clear TIF_USING_IWMMXT if we are not
going to set it.

Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/include/asm-arm/elf.h b/include/asm-arm/elf.h
index a1696ba238d3..7da97a937548 100644
--- a/include/asm-arm/elf.h
+++ b/include/asm-arm/elf.h
@@ -124,6 +124,8 @@ do { \
 	if (((ex).e_flags & EF_ARM_EABI_MASK) || \
 	    ((ex).e_flags & EF_ARM_SOFT_FLOAT)) \
 		set_thread_flag(TIF_USING_IWMMXT); \
+	else \
+		clear_thread_flag(TIF_USING_IWMMXT); \
 } while (0)
 
 #endif