Commit 97e49255 authored by Alexander Graf's avatar Alexander Graf Committed by Avi Kivity
Browse files

KVM: PPC: Add SVCPU to Book3S_32 



We need to keep the pointer to the shadow vcpu somewhere accessible from
within really early interrupt code. The best fit I found was the thread
struct, as that resides in an SPRG.

So let's put a pointer to the shadow vcpu in the thread struct and add
an asm-offset so we can find it.

Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 0474b259

arch/powerpc/include/asm/processor.h

+3 −0
Original line number Diff line number Diff line
@@ -229,6 +229,9 @@ struct thread_struct { 
	unsigned long	spefscr;	/* SPE & eFP status */

	int		used_spe;	/* set if process has used spe */

#endif /* CONFIG_SPE */

#ifdef CONFIG_KVM_BOOK3S_32_HANDLER

	void*		kvm_shadow_vcpu; /* KVM internal data */

#endif /* CONFIG_KVM_BOOK3S_32_HANDLER */

};



#define ARCH_MIN_TASKALIGN 16

arch/powerpc/kernel/asm-offsets.c

+3 −0
Original line number Diff line number Diff line
@@ -108,6 +108,9 @@ int main(void) 
	DEFINE(THREAD_USED_SPE, offsetof(struct thread_struct, used_spe));

#endif /* CONFIG_SPE */

#endif /* CONFIG_PPC64 */

#ifdef CONFIG_KVM_BOOK3S_32_HANDLER

	DEFINE(THREAD_KVM_SVCPU, offsetof(struct thread_struct, kvm_shadow_vcpu));

#endif



	DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));

	DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags));