From: Joerg Roedel <joerg.roedel@amd.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: <kvm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Joerg Roedel <joerg.roedel@amd.com>
Subject: [PATCH 11/29] KVM: MMU: Add infrastructure for two-level page walker
Date: Fri, 10 Sep 2010 17:30:48 +0200 [thread overview]
Message-ID: <1284132667-18620-12-git-send-email-joerg.roedel@amd.com> (raw)
In-Reply-To: <1284132667-18620-1-git-send-email-joerg.roedel@amd.com>
This patch introduces a mmu-callback to translate gpa
addresses in the walk_addr code. This is later used to
translate l2_gpa addresses into l1_gpa addresses.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/x86.c | 6 ++++++
include/linux/kvm_host.h | 5 +++++
3 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 235023e..7f95260 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -243,6 +243,7 @@ struct kvm_mmu {
void (*free)(struct kvm_vcpu *vcpu);
gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
u32 *error);
+ gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
void (*prefetch_page)(struct kvm_vcpu *vcpu,
struct kvm_mmu_page *page);
int (*sync_page)(struct kvm_vcpu *vcpu,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 57c97a4..d29ae19 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3434,6 +3434,11 @@ void kvm_get_segment(struct kvm_vcpu *vcpu,
kvm_x86_ops->get_segment(vcpu, var, seg);
}
+static gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
+{
+ return gpa;
+}
+
gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, u32 *error)
{
u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
@@ -5645,6 +5650,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
vcpu->arch.emulate_ctxt.ops = &emulate_ops;
vcpu->arch.mmu.root_hpa = INVALID_PAGE;
+ vcpu->arch.mmu.translate_gpa = translate_gpa;
if (!irqchip_in_kernel(kvm) || kvm_vcpu_is_bsp(vcpu))
vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
else
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index f2ecdd5..917e68f 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -534,6 +534,11 @@ static inline gpa_t gfn_to_gpa(gfn_t gfn)
return (gpa_t)gfn << PAGE_SHIFT;
}
+static inline gfn_t gpa_to_gfn(gpa_t gpa)
+{
+ return (gfn_t)(gpa >> PAGE_SHIFT);
+}
+
static inline hpa_t pfn_to_hpa(pfn_t pfn)
{
return (hpa_t)pfn << PAGE_SHIFT;
--
1.7.0.4
next prev parent reply other threads:[~2010-09-10 15:33 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-10 15:30 [PATCH 0/29] Nested Paging Virtualization for KVM v4 Joerg Roedel
2010-09-10 15:30 ` [PATCH 01/29] KVM: MMU: Check for root_level instead of long mode Joerg Roedel
2010-09-10 15:30 ` [PATCH 02/29] KVM: MMU: Make tdp_enabled a mmu-context parameter Joerg Roedel
2010-09-10 15:30 ` [PATCH 03/29] KVM: MMU: Make set_cr3 a function pointer in kvm_mmu Joerg Roedel
2010-09-10 15:30 ` [PATCH 04/29] KVM: X86: Introduce a tdp_set_cr3 function Joerg Roedel
2010-09-10 15:30 ` [PATCH 05/29] KVM: MMU: Introduce get_cr3 function pointer Joerg Roedel
2010-09-10 15:30 ` [PATCH 06/29] KVM: MMU: Introduce inject_page_fault " Joerg Roedel
2010-09-10 15:30 ` [PATCH 07/29] KVM: MMU: Introduce kvm_init_shadow_mmu helper function Joerg Roedel
2010-09-10 15:30 ` [PATCH 08/29] KVM: MMU: Let is_rsvd_bits_set take mmu context instead of vcpu Joerg Roedel
2010-09-10 15:30 ` [PATCH 09/29] KVM: MMU: Track page fault data in struct vcpu Joerg Roedel
2010-09-10 15:30 ` [PATCH 10/29] KVM: MMU: Introduce generic walk_addr function Joerg Roedel
2010-09-10 15:30 ` Joerg Roedel [this message]
2010-09-10 15:30 ` [PATCH 12/29] KVM: X86: Introduce pointer to mmu context used for gva_to_gpa Joerg Roedel
2010-09-10 15:30 ` [PATCH 13/29] KVM: MMU: Implement nested gva_to_gpa functions Joerg Roedel
2010-09-10 15:30 ` [PATCH 14/29] KVM: X86: Add kvm_read_guest_page_mmu function Joerg Roedel
2010-09-10 15:30 ` [PATCH 15/29] KVM: MMU: Make walk_addr_generic capable for two-level walking Joerg Roedel
2010-09-10 15:30 ` [PATCH 16/29] KVM: MMU: Introduce kvm_read_nested_guest_page() Joerg Roedel
2010-09-10 15:30 ` [PATCH 17/29] KVM: MMU: Introduce init_kvm_nested_mmu() Joerg Roedel
2010-09-10 15:30 ` [PATCH 18/29] KVM: MMU: Propagate the right fault back to the guest after gva_to_gpa Joerg Roedel
2010-09-12 8:50 ` Avi Kivity
2010-09-10 15:30 ` [PATCH 19/29] KVM: X86: Propagate fetch faults Joerg Roedel
2010-09-10 15:30 ` [PATCH 20/29] KVM: MMU: Add kvm_mmu parameter to load_pdptrs function Joerg Roedel
2010-09-10 15:30 ` [PATCH 21/29] KVM: MMU: Introduce kvm_pdptr_read_mmu Joerg Roedel
2010-09-10 15:30 ` [PATCH 22/29] KVM: MMU: Refactor mmu_alloc_roots function Joerg Roedel
2010-09-10 15:31 ` [PATCH 23/29] KVM: MMU: Allow long mode shadows for legacy page tables Joerg Roedel
2010-09-10 15:31 ` [PATCH 24/29] KVM: MMU: Track NX state in struct kvm_mmu Joerg Roedel
2010-09-12 8:06 ` Avi Kivity
2010-09-10 15:31 ` [PATCH 25/29] KVM: SVM: Implement MMU helper functions for Nested Nested Paging Joerg Roedel
2010-09-10 15:31 ` [PATCH 26/29] KVM: SVM: Initialize Nested Nested MMU context on VMRUN Joerg Roedel
2010-09-10 15:31 ` [PATCH 27/29] KVM: SVM: Expect two more candiates for exit_int_info Joerg Roedel
2010-09-10 15:31 ` [PATCH 28/29] KVM: SVM: Report Nested Paging support to userspace Joerg Roedel
2010-09-10 15:31 ` [PATCH 29/29] KVM: X86: Report SVM bit to userspace only when supported Joerg Roedel
2010-09-12 8:56 ` [PATCH 0/29] Nested Paging Virtualization for KVM v4 Avi Kivity
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