From: Avi Kivity <avi@redhat.com>
To: Joerg Roedel <joerg.roedel@amd.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 16/22] KVM: MMU: Track page fault data in struct vcpu
Date: Tue, 27 Apr 2010 19:02:22 +0300 [thread overview]
Message-ID: <4BD70A8E.2070906@redhat.com> (raw)
In-Reply-To: <20100427135700.GK11097@amd.com>
On 04/27/2010 04:57 PM, Joerg Roedel wrote:
>
>> But the nested guest can use pae paging and generate a #NPF with
>> exit_info_2> 4GB. So we need to keep the full fault address; if we
>> truncate, the guest might actually resolve the fault and let the
>> nested guest continue.
>>
> This could only be a malicious guest because it can't have memory above
> 4gb. But a guest could certainly setup its page tables to point there,
> thats true. So I change it to u64.
>
It doesn't need to be malicious, for example it could set up an mmio PCI
BAR outside the 4GB space.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-04-27 16:02 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-27 10:38 [PATCH 0/22] Nested Paging support for Nested SVM v2 Joerg Roedel
2010-04-27 10:38 ` [PATCH 01/22] KVM: MMU: Check for root_level instead of long mode Joerg Roedel
2010-04-27 10:38 ` [PATCH 02/22] KVM: MMU: Make tdp_enabled a mmu-context parameter Joerg Roedel
2010-04-27 12:06 ` Avi Kivity
2010-04-27 10:38 ` [PATCH 03/22] KVM: MMU: Make set_cr3 a function pointer in kvm_mmu Joerg Roedel
2010-04-27 10:38 ` [PATCH 04/22] KVM: X86: Introduce a tdp_set_cr3 function Joerg Roedel
2010-04-27 10:38 ` [PATCH 05/22] KVM: MMU: Introduce get_cr3 function pointer Joerg Roedel
2010-04-27 10:38 ` [PATCH 06/22] KVM: MMU: Introduce inject_page_fault " Joerg Roedel
2010-04-27 10:38 ` [PATCH 07/22] KVM: SVM: Implement MMU helper functions for Nested Nested Paging Joerg Roedel
2010-04-27 10:38 ` [PATCH 08/22] KVM: MMU: Change init_kvm_softmmu to take a context as parameter Joerg Roedel
2010-04-27 10:38 ` [PATCH 09/22] KVM: MMU: Let is_rsvd_bits_set take mmu context instead of vcpu Joerg Roedel
2010-04-27 10:38 ` [PATCH 10/22] KVM: MMU: Introduce generic walk_addr function Joerg Roedel
2010-04-27 10:38 ` [PATCH 11/22] KVM: MMU: Add infrastructure for two-level page walker Joerg Roedel
2010-04-27 12:34 ` Avi Kivity
2010-04-28 10:52 ` Joerg Roedel
2010-04-28 11:24 ` Avi Kivity
2010-04-28 11:03 ` Joerg Roedel
2010-04-28 11:09 ` Avi Kivity
2010-04-27 10:38 ` [PATCH 12/22] KVM: MMU: Implement nested gva_to_gpa functions Joerg Roedel
2010-04-27 12:37 ` Avi Kivity
2010-04-28 14:20 ` Joerg Roedel
2010-04-27 10:38 ` [PATCH 13/22] KVM: X86: Add kvm_read_guest_page_tdp function Joerg Roedel
2010-04-27 12:42 ` Avi Kivity
2010-04-27 13:10 ` Joerg Roedel
2010-04-27 13:40 ` Avi Kivity
2010-04-27 10:38 ` [PATCH 14/22] KVM: MMU: Make walk_addr_generic capable for two-level walking Joerg Roedel
2010-04-27 10:38 ` [PATCH 15/22] KVM: MMU: Introduce kvm_read_guest_page_x86() Joerg Roedel
2010-04-27 12:52 ` Avi Kivity
2010-04-27 13:20 ` Joerg Roedel
2010-04-27 13:35 ` Avi Kivity
2010-04-27 15:40 ` Joerg Roedel
2010-04-27 16:09 ` Avi Kivity
2010-04-27 16:27 ` Joerg Roedel
2010-04-28 15:31 ` Joerg Roedel
2010-04-27 10:38 ` [PATCH 16/22] KVM: MMU: Track page fault data in struct vcpu Joerg Roedel
2010-04-27 12:58 ` Avi Kivity
2010-04-27 13:28 ` Joerg Roedel
2010-04-27 13:37 ` Avi Kivity
2010-04-27 13:57 ` Joerg Roedel
2010-04-27 16:02 ` Avi Kivity [this message]
2010-05-03 16:32 ` Joerg Roedel
2010-05-04 7:53 ` Avi Kivity
2010-05-04 9:11 ` Roedel, Joerg
2010-05-04 9:20 ` Avi Kivity
2010-05-04 9:37 ` Roedel, Joerg
2010-05-04 9:45 ` Avi Kivity
2010-05-04 9:50 ` Avi Kivity
2010-05-04 12:00 ` Roedel, Joerg
2010-05-04 12:04 ` Avi Kivity
2010-04-27 10:38 ` [PATCH 17/22] KVM: MMU: Propagate the right fault back to the guest after gva_to_gpa Joerg Roedel
2010-04-27 10:38 ` [PATCH 18/22] KVM: X86: Propagate fetch faults Joerg Roedel
2010-04-27 10:38 ` [PATCH 19/22] KVM: MMU: Introduce init_kvm_nested_mmu() Joerg Roedel
2010-04-27 10:38 ` [PATCH 20/22] KVM: SVM: Initialize Nested Nested MMU context on VMRUN Joerg Roedel
2010-04-27 13:01 ` Avi Kivity
2010-04-27 10:38 ` [PATCH 21/22] KVM: SVM: Report Nested Paging support to userspace Joerg Roedel
2010-04-27 10:38 ` [PATCH 22/22] KVM: SVM: Expect two more candiates for exit_int_info Joerg Roedel
2010-04-27 13:03 ` [PATCH 0/22] Nested Paging support for Nested SVM v2 Avi Kivity
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