Commit 3ce465e0 authored Feb 10, 2015 by James Hogan Committed by Ralf Baechle Feb 19, 2015

MIPS: Export FP functions used by lose_fpu(1) for KVM



Export the _save_fp asm function used by the lose_fpu(1) macro to GPL
modules so that KVM can make use of it when it is built as a module.

This fixes the following build error when CONFIG_KVM=m due to commit
f798217d ("KVM: MIPS: Don't leak FPU/DSP to guest"):

ERROR: "_save_fp" [arch/mips/kvm/kvm.ko] undefined!

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Fixes: f798217d (KVM: MIPS: Don't leak FPU/DSP to guest)
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.10+
Patchwork: https://patchwork.linux-mips.org/patch/9260/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 0e16d1e3

arch/mips/kernel/mips_ksyms.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -14,6 +14,7 @@
		#include <linux/mm.h>
		#include <asm/uaccess.h>
		#include <asm/ftrace.h>
		#include <asm/fpu.h>

		extern void __bzero(void __s, size_t __count);
		extern long __strncpy_from_kernel_nocheck_asm(char *__to,
		@@ -31,6 +32,11 @@ extern long __strnlen_kernel_asm(const char *s);
		extern long __strnlen_user_nocheck_asm(const char *s);
		extern long __strnlen_user_asm(const char *s);

		/*
		* Core architecture code
		*/
		EXPORT_SYMBOL_GPL(_save_fp);

		/*
		* String functions
		*/