James Hogan
813a631f08
commit 3ce465e04bfd8de9956d515d6e9587faac3375dc upstream.
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
f798217dfd03 ("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: f798217dfd03 (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
Patchwork: https://patchwork.linux-mips.org/patch/9260/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
[james.hogan@imgtec.com: Only export when CPU_R4K_FPU=y prior to v3.16,
so as not to break the Octeon build which excludes FPU support. KVM
depends on MIPS32r2 anyway.]
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
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* Export MIPS-specific functions needed for loadable modules.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1996, 97, 98, 99, 2000, 01, 03, 04, 05, 12 by Ralf Baechle
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* Copyright (C) 1999, 2000, 01 Silicon Graphics, Inc.
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*/
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#include <linux/interrupt.h>
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#include <linux/export.h>
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#include <asm/checksum.h>
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#include <linux/mm.h>
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#include <asm/uaccess.h>
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#include <asm/ftrace.h>
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#include <asm/fpu.h>
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extern void *__bzero(void *__s, size_t __count);
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extern long __strncpy_from_user_nocheck_asm(char *__to,
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const char *__from, long __len);
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extern long __strncpy_from_user_asm(char *__to, const char *__from,
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long __len);
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extern long __strlen_user_nocheck_asm(const char *s);
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extern long __strlen_user_asm(const char *s);
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extern long __strnlen_user_nocheck_asm(const char *s);
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extern long __strnlen_user_asm(const char *s);
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/*
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* Core architecture code
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*/
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#ifdef CONFIG_CPU_R4K_FPU
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EXPORT_SYMBOL_GPL(_save_fp);
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#endif
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/*
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* String functions
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*/
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EXPORT_SYMBOL(memset);
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EXPORT_SYMBOL(memcpy);
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EXPORT_SYMBOL(memmove);
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/*
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* Functions that operate on entire pages. Mostly used by memory management.
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*/
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EXPORT_SYMBOL(clear_page);
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EXPORT_SYMBOL(copy_page);
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/*
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* Userspace access stuff.
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*/
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EXPORT_SYMBOL(__copy_user);
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EXPORT_SYMBOL(__copy_user_inatomic);
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EXPORT_SYMBOL(__bzero);
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EXPORT_SYMBOL(__strncpy_from_user_nocheck_asm);
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EXPORT_SYMBOL(__strncpy_from_user_asm);
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EXPORT_SYMBOL(__strlen_user_nocheck_asm);
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EXPORT_SYMBOL(__strlen_user_asm);
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EXPORT_SYMBOL(__strnlen_user_nocheck_asm);
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EXPORT_SYMBOL(__strnlen_user_asm);
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EXPORT_SYMBOL(csum_partial);
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EXPORT_SYMBOL(csum_partial_copy_nocheck);
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EXPORT_SYMBOL(__csum_partial_copy_user);
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EXPORT_SYMBOL(invalid_pte_table);
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#ifdef CONFIG_FUNCTION_TRACER
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/* _mcount is defined in arch/mips/kernel/mcount.S */
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EXPORT_SYMBOL(_mcount);
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#endif
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