From: Joerg Roedel <joerg.roedel@amd.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: <"http://kvm.qumranet.com"@osrc.amd.com>,
<linux-kernel@vger.kernel.org>,
Joerg Roedel <joerg.roedel@amd.com>
Subject: [PATCH 10/27] KVM: MMU: Add infrastructure for two-level page walker
Date: Mon, 6 Sep 2010 17:01:45 +0200 [thread overview]
Message-ID: <1283785322-26898-11-git-send-email-joerg.roedel@amd.com> (raw)
In-Reply-To: <1283785322-26898-1-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 3fefcd8..af8cce3 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -245,6 +245,7 @@ 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 *error);
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 f47db25..829efb0 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3433,6 +3433,11 @@ 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 *error)
+{
+ 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;
@@ -5644,6 +5649,7 @@ 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..f2989a7 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:[~2010-09-06 15:07 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-06 15:01 [PATCH 0/27] Nested Paging Virtualization for KVM v3 Joerg Roedel
2010-09-06 15:01 ` [PATCH 01/27] KVM: MMU: Check for root_level instead of long mode Joerg Roedel
2010-09-06 15:01 ` [PATCH 02/27] KVM: MMU: Make tdp_enabled a mmu-context parameter Joerg Roedel
2010-09-06 15:01 ` [PATCH 03/27] KVM: MMU: Make set_cr3 a function pointer in kvm_mmu Joerg Roedel
2010-09-06 15:01 ` [PATCH 04/27] KVM: X86: Introduce a tdp_set_cr3 function Joerg Roedel
2010-09-06 15:01 ` [PATCH 05/27] KVM: MMU: Introduce get_cr3 function pointer Joerg Roedel
2010-09-06 15:01 ` [PATCH 06/27] KVM: MMU: Introduce inject_page_fault " Joerg Roedel
2010-09-06 15:01 ` [PATCH 07/27] KVM: MMU: Introduce kvm_init_shadow_mmu helper function Joerg Roedel
2010-09-06 15:01 ` [PATCH 08/27] KVM: MMU: Let is_rsvd_bits_set take mmu context instead of vcpu Joerg Roedel
2010-09-06 15:01 ` [PATCH 09/27] KVM: MMU: Introduce generic walk_addr function Joerg Roedel
2010-09-06 15:01 ` Joerg Roedel [this message]
2010-09-06 15:01 ` [PATCH 11/27] KVM: X86: Introduce pointer to mmu context used for gva_to_gpa Joerg Roedel
2010-09-06 15:01 ` [PATCH 12/27] KVM: MMU: Implement nested gva_to_gpa functions Joerg Roedel
2010-09-06 15:01 ` [PATCH 13/27] KVM: X86: Add kvm_read_guest_page_tdp function Joerg Roedel
2010-09-06 15:01 ` [PATCH 14/27] KVM: MMU: Make walk_addr_generic capable for two-level walking Joerg Roedel
2010-09-06 15:01 ` [PATCH 15/27] KVM: MMU: Introduce kvm_read_guest_page_x86() Joerg Roedel
2010-09-06 15:01 ` [PATCH 16/27] KVM: MMU: Introduce init_kvm_nested_mmu() Joerg Roedel
2010-09-06 15:01 ` [PATCH 17/27] KVM: MMU: Track page fault data in struct vcpu Joerg Roedel
2010-09-06 15:01 ` [PATCH 18/27] KVM: MMU: Propagate the right fault back to the guest after gva_to_gpa Joerg Roedel
2010-09-06 15:01 ` [PATCH 19/27] KVM: X86: Propagate fetch faults Joerg Roedel
2010-09-06 15:01 ` [PATCH 20/27] KVM: MMU: Add kvm_mmu parameter to load_pdptrs function Joerg Roedel
2010-09-06 15:01 ` [PATCH 21/27] KVM: MMU: Introduce kvm_pdptr_read_mmu Joerg Roedel
2010-09-06 15:01 ` [PATCH 22/27] KVM: MMU: Refactor mmu_alloc_roots function Joerg Roedel
2010-09-06 15:01 ` [PATCH 23/27] KVM: MMU: Allow long mode shadows for legacy page tables Joerg Roedel
2010-09-06 15:01 ` [PATCH 24/27] KVM: SVM: Implement MMU helper functions for Nested Nested Paging Joerg Roedel
2010-09-06 15:02 ` [PATCH 25/27] KVM: SVM: Initialize Nested Nested MMU context on VMRUN Joerg Roedel
2010-09-06 15:02 ` [PATCH 26/27] KVM: SVM: Expect two more candiates for exit_int_info Joerg Roedel
2010-09-06 15:02 ` [PATCH 27/27] KVM: SVM: Report Nested Paging support to userspace Joerg Roedel
2010-09-06 15:55 [PATCH 0/27] Nested Paging Virtualization for KVM v3 (now with fixed Cc-List) Joerg Roedel
2010-09-06 15:55 ` [PATCH 10/27] KVM: MMU: Add infrastructure for two-level page walker Joerg Roedel
2010-09-06 18:05 ` Avi Kivity
2010-09-08 9:20 ` Roedel, Joerg
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1283785322-26898-11-git-send-email-joerg.roedel@amd.com \
--to=joerg.roedel@amd.com \
--cc="http://kvm.qumranet.com"@osrc.amd.com \
--cc=avi@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mtosatti@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®