These two patches export the _save_fp and _save_msa 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 errors when CONFIG_KVM=m [and
CONFIG_CPU_HAS_MSA=y] due to commit f798217dfd03 ("KVM: MIPS: Don't leak
FPU/DSP to guest"):
ERROR: "_save_fp" [arch/mips/kvm/kvm.ko] undefined!
ERROR: "_save_msa" [arch/mips/kvm/kvm.ko] undefined!
The two parts are separated because the commit they fix is marked for
stable, and _save_msa only exists since v3.15, so only the first patch
needs to be applied to stable branches v3.10..v3.14, but both will be
needed on stable branches v3.15..v3.19.
Ralf: Since the broken commit exists in the KVM tree, it probably makes
sense to be applied there, so an Ack would be appreciated.
Fixes: f798217dfd03 (KVM: MIPS: Don't leak FPU/DSP to guest)
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Paul Burton <paul.burton@xxxxxxxxxx>
Cc: Gleb Natapov <gleb@xxxxxxxxxx>
Cc: kvm@xxxxxxxxxxxxxxx
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: <stable@xxxxxxxxxxxxxxx>
James Hogan (2):
MIPS: Export FP functions used by lose_fpu(1) for KVM
MIPS: Export MSA functions used by lose_fpu(1) for KVM
arch/mips/kernel/mips_ksyms.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--
2.0.5
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