From: Christian Ehrhardt <ehrhardt@xxxxxxxxxxxxxxxxxx> This adds the guest portion of the hypercall infrastructure, basically an illegal instruction with a defined layout. See http://kvm.qumranet.com/kvmwiki/PowerPC_Hypercall_ABI for more detail on the hypercall ABI for powerpc. Signed-off-by: Christian Ehrhardt <ehrhardt@xxxxxxxxxxxxxxxxxx> --- [diffstat] kvm_para.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) [diff] diff --git a/include/asm-powerpc/kvm_para.h b/include/asm-powerpc/kvm_para.h --- a/include/asm-powerpc/kvm_para.h +++ b/include/asm-powerpc/kvm_para.h @@ -25,6 +25,8 @@ #ifdef __KERNEL__ #include <linux/of.h> + +#define KVM_HYPERCALL_BIN 0x03ffffff static struct kvmppc_para_features { char *dtcell; @@ -63,6 +65,20 @@ void kvm_guest_init(void); +static inline long kvm_hypercall1(unsigned int nr, unsigned long p1) +{ + register unsigned long hcall asm ("r0") = nr; + register unsigned long arg1 asm ("r3") = p1; + register long ret asm ("r11"); + + asm volatile(".long %1" + : "=r"(ret) + : "i"(KVM_HYPERCALL_BIN), "r"(hcall), "r"(arg1) + : "r4", "r5", "r6", "r7", "r8", + "r9", "r10", "r12", "cc"); + return ret; +} + #endif /* __KERNEL__ */ #endif /* __POWERPC_KVM_PARA_H__ */ -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
