lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

KVM: PPC: Add helper functions to call real mode loaders

Browse Source 
Linux contains quite some bits of code to load FPU, Altivec and VSX lazily for
a task. It calls those bits in real mode, coming from an interrupt handler.

For KVM we better reuse those, so let's wrap a bit of trampoline magic around
them and then we can call them from normal module code.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Alexander Graf
2010-01-15 14:49:10 +01:00
committed by Marcelo Tosatti
parent fbad5f1dfd
commit d5e528136c
3 changed files with 44 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/powerpc/include/asm/kvm_book3s.h
View File

@@ -124,6 +124,9 @@ extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
extern u32 kvmppc_trampoline_lowmem;
extern u32 kvmppc_trampoline_enter;
extern void kvmppc_rmcall(ulong srr0, ulong srr1);
extern void kvmppc_load_up_fpu(void);
extern void kvmppc_load_up_altivec(void);
extern void kvmppc_load_up_vsx(void);
static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
{