diff options
| author | James Hogan <james.hogan@imgtec.com> | 2015-02-10 10:02:59 +0000 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2015-03-07 14:29:40 +0100 |
| commit | 4f877b0c89a891eaea726b7972217c8252b250c7 (patch) | |
| tree | bc922fcdd12c3edfa59c4c898f1de03524614a9e /arch | |
| parent | 8920e92c8062bb6ee89605a7b72ec9c466fde608 (diff) | |
MIPS: Export FP functions used by lose_fpu(1) for KVM
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: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/kernel/mips_ksyms.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/kernel/mips_ksyms.c b/arch/mips/kernel/mips_ksyms.c index 6e58e97fcd39..cedeb5686eb5 100644 --- a/arch/mips/kernel/mips_ksyms.c +++ b/arch/mips/kernel/mips_ksyms.c @@ -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_user_nocheck_asm(char *__to, @@ -26,6 +27,13 @@ extern long __strnlen_user_nocheck_asm(const char *s); extern long __strnlen_user_asm(const char *s); /* + * Core architecture code + */ +#ifdef CONFIG_CPU_R4K_FPU +EXPORT_SYMBOL_GPL(_save_fp); +#endif + +/* * String functions */ EXPORT_SYMBOL(memset); |