Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / arch / powerpc / include / asm / kvm_book3s_64.h

diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h
index e43fe42..d0ac94f 100644 (file)
--- a/arch/powerpc/include/asm/kvm_book3s_64.h
+++ b/arch/powerpc/include/asm/kvm_book3s_64.h
@@ -29,4 +29,37 @@ static inline struct kvmppc_book3s_shadow_vcpu *to_svcpu(struct kvm_vcpu *vcpu)
 
 #define SPAPR_TCE_SHIFT                12
 
+static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r,
+                                            unsigned long pte_index)
+{
+       unsigned long rb, va_low;
+
+       rb = (v & ~0x7fUL) << 16;               /* AVA field */
+       va_low = pte_index >> 3;
+       if (v & HPTE_V_SECONDARY)
+               va_low = ~va_low;
+       /* xor vsid from AVA */
+       if (!(v & HPTE_V_1TB_SEG))
+               va_low ^= v >> 12;
+       else
+               va_low ^= v >> 24;
+       va_low &= 0x7ff;
+       if (v & HPTE_V_LARGE) {
+               rb |= 1;                        /* L field */
+               if (cpu_has_feature(CPU_FTR_ARCH_206) &&
+                   (r & 0xff000)) {
+                       /* non-16MB large page, must be 64k */
+                       /* (masks depend on page size) */
+                       rb |= 0x1000;           /* page encoding in LP field */
+                       rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */
+                       rb |= (va_low & 0xfe);  /* AVAL field (P7 doesn't seem to care) */
+               }
+       } else {
+               /* 4kB page */
+               rb |= (va_low & 0x7ff) << 12;   /* remaining 11b of VA */
+       }
+       rb |= (v >> 54) & 0x300;                /* B field */
+       return rb;
+}
+
 #endif /* __ASM_KVM_BOOK3S_64_H__ */