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From: Valentine Sinitsyn <valentine.sinitsyn@gmail.com>
To: kvm@vger.kernel.org
Subject: Nested paging in nested SVM setup
Date: Wed, 18 Jun 2014 17:36:36 +0600	[thread overview]
Message-ID: <53A179C4.9060203@gmail.com> (raw)

Hi all,

I'm using a KVM/Qemu nested SVM setup to debug another hypervisor 
(Jailhouse) I contribute to. IOW, the scheme is: AMD64 Linux host 
running [paravirtualized] AMD64 Linux guest (the same kernel as the 
host) running Jailhouse.

Jailhouse, in turn, uses Nested Paging to virtualize xAPIC: APIC page 
(0xfee00000, no APIC remapping) is mapped read-only into Jailhouse's 
guests. This of course implies that APIC page appears to Jailhouse 
guests as uncacheable (UC).

Is it achievable in the setup I described, or do I need to run my code 
on a real hardware to make the APIC page accesses in Jailhouse guests 
uncacheable?

Thanks in advance.

--
Best regards,
Valentine Sinitsyn

             reply	other threads:[~2014-06-18 11:36 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-18 11:36 Valentine Sinitsyn [this message]
2014-06-18 12:47 ` Nested paging in nested SVM setup Jan Kiszka
2014-06-18 16:59   ` Valentine Sinitsyn
2014-06-19  9:32     ` Paolo Bonzini
2014-06-19  5:03   ` Valentine Sinitsyn
2014-08-20  6:46   ` Valentine Sinitsyn
2014-08-20  6:55     ` Paolo Bonzini
2014-08-20  7:37       ` Valentine Sinitsyn
2014-08-20  8:11         ` Paolo Bonzini
2014-08-20  9:49           ` Valentine Sinitsyn
2014-08-21  6:28           ` Valentine Sinitsyn
2014-08-21  8:48             ` Valentine Sinitsyn
2014-08-21 11:04               ` Paolo Bonzini
2014-08-21 11:06                 ` Jan Kiszka
2014-08-21 11:12                   ` Valentine Sinitsyn
2014-08-21 11:16                 ` Valentine Sinitsyn
2014-08-21 11:24               ` Paolo Bonzini
2014-08-21 12:28                 ` Valentine Sinitsyn
2014-08-21 12:38                   ` Valentine Sinitsyn
2014-08-21 13:40                   ` Valentine Sinitsyn
2014-09-01 17:41                   ` Paolo Bonzini
2014-09-01 19:21                     ` Valentine Sinitsyn
2014-09-02  8:25                       ` Paolo Bonzini
2014-09-02  9:16                         ` Valentine Sinitsyn
2014-09-02 11:21                           ` Paolo Bonzini
2014-09-02 11:26                             ` Valentine Sinitsyn
2014-08-21 17:35                 ` Valentine Sinitsyn
2014-08-21 20:31                   ` Paolo Bonzini
2014-08-22  4:33                     ` Valentine Sinitsyn
2014-08-22  8:53                       ` Paolo Bonzini
2014-09-01 16:11                       ` Paolo Bonzini
2014-09-01 17:04     ` Paolo Bonzini
2014-09-02  6:09       ` Valentine Sinitsyn
2014-09-02  6:21         ` Valentine Sinitsyn
2014-09-02  9:45         ` Paolo Bonzini
2014-09-02  9:53           ` Valentine Sinitsyn
2014-09-02 11:48             ` Paolo Bonzini
2014-09-02 10:31           ` Valentine Sinitsyn

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