From: harry harry <hiharryharryharry@gmail.com>
To: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: kvm@vger.kernel.org, libvir-list@redhat.com,
qemu-devel@nongnu.org, Maxim Levitsky <mlevitsk@redhat.com>,
mathieu.tarral@protonmail.com, stefanha@redhat.com,
pbonzini@redhat.com
Subject: Re: Why guest physical addresses are not the same as the corresponding host virtual addresses in QEMU/KVM? Thanks!
Date: Tue, 13 Oct 2020 01:46:16 -0400 [thread overview]
Message-ID: <CA+-xGqMMa-DB1SND5MRugusDafjNA9CVw-=OBK7q=CK1impmTQ@mail.gmail.com> (raw)
In-Reply-To: <CA+-xGqO4DtUs3-jH+QMPEze2GrXwtNX0z=vVUVak5HOpPKaDxQ@mail.gmail.com>
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BTW, I assume the software logic for KVM to find the HPA with a given HVA
(as you said like below) should be the same as the hardware logic in MMU
to translate ``GPA -> [extended/nested page tables] -> HPA''. If this is
true, I cannot understand how KVM can find a correct HPA with an HVA (e.g.,
array[0]'s HVA is not 0x0000000000000081 in the last email) that is
different from its corresponding GPA.
GPA -> [memslots] -> HVA -> [host page tables] -> HPA
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next prev parent reply other threads:[~2020-10-13 5:47 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-11 5:26 Why guest physical addresses are not the same as the corresponding host virtual addresses in QEMU/KVM? Thanks! harry harry
2020-10-11 5:26 ` harry harry
2020-10-11 7:29 ` Maxim Levitsky
2020-10-11 7:29 ` Maxim Levitsky
2020-10-11 14:11 ` harry harry
2020-10-11 14:11 ` harry harry
2020-10-12 16:54 ` Sean Christopherson
2020-10-12 16:54 ` Sean Christopherson
2020-10-13 4:30 ` harry harry
2020-10-13 4:30 ` harry harry
2020-10-13 4:52 ` Sean Christopherson
2020-10-13 4:52 ` Sean Christopherson
2020-10-13 5:33 ` harry harry
2020-10-13 5:46 ` harry harry [this message]
2020-10-13 6:43 ` Paolo Bonzini
2020-10-13 6:43 ` Paolo Bonzini
2020-10-13 20:36 ` harry harry
2020-10-13 20:36 ` harry harry
2020-10-14 8:27 ` Paolo Bonzini
2020-10-14 8:27 ` Paolo Bonzini
2020-10-14 8:29 ` Maxim Levitsky
2020-10-14 8:29 ` Maxim Levitsky
2020-10-15 3:45 ` harry harry
2020-10-15 3:45 ` harry harry
2020-10-13 7:03 ` Sean Christopherson
2020-10-13 7:03 ` Sean Christopherson
2020-10-13 22:40 ` harry harry
2020-10-13 22:40 ` harry harry
2020-10-14 8:28 ` Paolo Bonzini
2020-10-14 8:28 ` Paolo Bonzini
2020-10-15 3:43 ` harry harry
2020-10-15 3:43 ` harry harry
2020-10-13 5:00 ` harry harry
2020-10-13 5:00 ` harry harry
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