Commit 31711f22 authored by Jerone Young's avatar Jerone Young Committed by Avi Kivity

KVM: ppc: adds trace points for ppc tlb activity

This patch adds trace points to track powerpc TLB activities using the
KVM_TRACE infrastructure.
Signed-off-by: default avatarJerone Young <jyoung5@us.ibm.com>
Signed-off-by: default avatarChristian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 12f67556
......@@ -19,6 +19,7 @@
#include <linux/types.h>
#include <linux/string.h>
#include <linux/kvm.h>
#include <linux/kvm_host.h>
#include <linux/highmem.h>
#include <asm/mmu-44x.h>
......@@ -175,6 +176,10 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gfn_t gfn, u64 asid,
stlbe->word1 = (hpaddr & 0xfffffc00) | ((hpaddr >> 32) & 0xf);
stlbe->word2 = kvmppc_44x_tlb_shadow_attrib(flags,
vcpu->arch.msr & MSR_PR);
KVMTRACE_5D(STLB_WRITE, vcpu, victim,
stlbe->tid, stlbe->word0, stlbe->word1, stlbe->word2,
handler);
}
void kvmppc_mmu_invalidate(struct kvm_vcpu *vcpu, gva_t eaddr,
......@@ -204,6 +209,9 @@ void kvmppc_mmu_invalidate(struct kvm_vcpu *vcpu, gva_t eaddr,
kvmppc_44x_shadow_release(vcpu, i);
stlbe->word0 = 0;
KVMTRACE_5D(STLB_INVAL, vcpu, i,
stlbe->tid, stlbe->word0, stlbe->word1,
stlbe->word2, handler);
}
up_write(&current->mm->mmap_sem);
}
......@@ -217,8 +225,13 @@ void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode)
/* XXX Replace loop with fancy data structures. */
down_write(&current->mm->mmap_sem);
for (i = 0; i <= tlb_44x_hwater; i++) {
struct tlbe *stlbe = &vcpu->arch.shadow_tlb[i];
kvmppc_44x_shadow_release(vcpu, i);
vcpu->arch.shadow_tlb[i].word0 = 0;
stlbe->word0 = 0;
KVMTRACE_5D(STLB_INVAL, vcpu, i,
stlbe->tid, stlbe->word0, stlbe->word1,
stlbe->word2, handler);
}
up_write(&current->mm->mmap_sem);
}
......@@ -170,6 +170,10 @@ static int kvmppc_emul_tlbwe(struct kvm_vcpu *vcpu, u32 inst)
kvmppc_mmu_map(vcpu, eaddr, raddr >> PAGE_SHIFT, asid, flags);
}
KVMTRACE_5D(GTLB_WRITE, vcpu, index,
tlbe->tid, tlbe->word0, tlbe->word1, tlbe->word2,
handler);
return EMULATE_DONE;
}
......
......@@ -471,5 +471,8 @@ struct kvm_trace_rec {
#define KVM_TRC_LMSW (KVM_TRC_HANDLER + 0x13)
#define KVM_TRC_APIC_ACCESS (KVM_TRC_HANDLER + 0x14)
#define KVM_TRC_TDP_FAULT (KVM_TRC_HANDLER + 0x15)
#define KVM_TRC_GTLB_WRITE (KVM_TRC_HANDLER + 0x16)
#define KVM_TRC_STLB_WRITE (KVM_TRC_HANDLER + 0x17)
#define KVM_TRC_STLB_INVAL (KVM_TRC_HANDLER + 0x18)
#endif
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