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Commit 52e9bae9 authored Sep 27, 2014 by Vineet Gupta

ARC: unbork FPU save/restore



Fixes: 2ab402df "ARC: make start_thread() out-of-line"
CC: <stable@vger.kernel.org>  #3.16
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

parent be64c997

arch/arc/include/asm/arcregs.h

+0 −8

Original line number	Diff line number	Diff line
		@@ -189,14 +189,6 @@
		#define PAGES_TO_KB(n_pages) ((n_pages) << (PAGE_SHIFT - 10))
		#define PAGES_TO_MB(n_pages) (PAGES_TO_KB(n_pages) >> 10)

		#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
		/* These DPFP regs need to be saved/restored across ctx-sw */
		struct arc_fpu {
		struct {
		unsigned int l, h;
		} aux_dpfp[2];
		};
		#endif

		/*
		***************************************************************

arch/arc/include/asm/processor.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,15 @@

		#include <asm/ptrace.h>

		#ifdef CONFIG_ARC_FPU_SAVE_RESTORE
		/* These DPFP regs need to be saved/restored across ctx-sw */
		struct arc_fpu {
		struct {
		unsigned int l, h;
		} aux_dpfp[2];
		};
		#endif

		/* Arch specific stuff which needs to be saved per task.
		* However these items are not so important so as to earn a place in
		* struct thread_info