From: gleb@redhat.com (Gleb Natapov)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/3] KVM: ARM: Get rid of KVM_HPAGE_ defines
Date: Sun, 25 Aug 2013 17:48:47 +0300 [thread overview]
Message-ID: <20130825144847.GV8218@redhat.com> (raw)
In-Reply-To: <CAFEAcA9-hcGHYAKTP4xty1pB-bs=EgATrxKQhCOQ3YZOOpM4wg@mail.gmail.com>
On Sun, Aug 25, 2013 at 03:29:17PM +0100, Peter Maydell wrote:
> On 25 August 2013 15:05, Gleb Natapov <gleb@redhat.com> wrote:
> > (you will probably need them when you will implement
> > nested HYP mode :)).
>
> Smiley noted, but this is pretty unlikely since it's not possible
> to lie to the guest about which mode it's in, so you can't make
> a guest think it's in Hyp mode.
>
I suspected this, but forgot most that I read about Hyp mode by now.
Need to refresh my memory ASAP. Is it impossible even with a lot of
emulation? Can guest detect that it is not in a Hyp mode without
trapping into hypervisor?
--
Gleb.
WARNING: multiple messages have this Message-ID (diff)
From: Gleb Natapov <gleb@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
kvm-devel <kvm@vger.kernel.org>,
Patch Tracking <patches@linaro.org>,
Christoffer Dall <christoffer.dall@linaro.org>,
"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
arm-mail-list <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 2/3] KVM: ARM: Get rid of KVM_HPAGE_ defines
Date: Sun, 25 Aug 2013 17:48:47 +0300 [thread overview]
Message-ID: <20130825144847.GV8218@redhat.com> (raw)
In-Reply-To: <CAFEAcA9-hcGHYAKTP4xty1pB-bs=EgATrxKQhCOQ3YZOOpM4wg@mail.gmail.com>
On Sun, Aug 25, 2013 at 03:29:17PM +0100, Peter Maydell wrote:
> On 25 August 2013 15:05, Gleb Natapov <gleb@redhat.com> wrote:
> > (you will probably need them when you will implement
> > nested HYP mode :)).
>
> Smiley noted, but this is pretty unlikely since it's not possible
> to lie to the guest about which mode it's in, so you can't make
> a guest think it's in Hyp mode.
>
I suspected this, but forgot most that I read about Hyp mode by now.
Need to refresh my memory ASAP. Is it impossible even with a lot of
emulation? Can guest detect that it is not in a Hyp mode without
trapping into hypervisor?
--
Gleb.
next prev parent reply other threads:[~2013-08-25 14:48 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-09 4:07 [PATCH 0/3] KVM/ARM Huge pages support Christoffer Dall
2013-08-09 4:07 ` Christoffer Dall
2013-08-09 4:07 ` [PATCH 1/3] KVM: Move gfn_to_index to x86 specific code Christoffer Dall
2013-08-09 4:07 ` Christoffer Dall
2013-08-09 4:07 ` [PATCH 2/3] KVM: ARM: Get rid of KVM_HPAGE_XXX defines Christoffer Dall
2013-08-09 4:07 ` Christoffer Dall
2013-08-09 4:07 ` [PATCH 3/3] KVM: ARM: Transparent huge pages and hugetlbfs support Christoffer Dall
2013-08-09 4:07 ` Christoffer Dall
2013-09-23 10:11 ` Marc Zyngier
2013-09-23 10:11 ` Marc Zyngier
2013-09-23 14:46 ` Marc Zyngier
2013-09-23 14:46 ` Marc Zyngier
2013-09-24 15:41 ` Steve Capper
2013-09-24 15:41 ` Steve Capper
2013-10-02 22:36 ` Christoffer Dall
2013-10-02 22:36 ` Christoffer Dall
2013-10-03 20:33 ` Christoffer Dall
2013-10-03 20:33 ` Christoffer Dall
2013-10-04 9:23 ` Marc Zyngier
2013-10-04 9:23 ` Marc Zyngier
2013-08-09 14:30 ` [PATCH 2/3] KVM: ARM: Get rid of KVM_HPAGE_ defines Christoffer Dall
2013-08-09 14:30 ` Christoffer Dall
2013-08-25 14:05 ` Gleb Natapov
2013-08-25 14:05 ` Gleb Natapov
2013-08-25 14:29 ` Peter Maydell
2013-08-25 14:29 ` Peter Maydell
2013-08-25 14:48 ` Gleb Natapov [this message]
2013-08-25 14:48 ` Gleb Natapov
2013-08-25 15:18 ` Peter Maydell
2013-08-25 15:18 ` Peter Maydell
2013-08-25 15:27 ` Alexander Graf
2013-08-25 15:27 ` Alexander Graf
2013-08-26 10:55 ` Gleb Natapov
2013-08-26 10:55 ` Gleb Natapov
2013-08-26 0:46 ` Christoffer Dall
2013-08-26 0:46 ` Christoffer Dall
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