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From: stsp <stsp2@yandex.ru>
To: Jim Mattson <jmattson@google.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Sean Christopherson <seanjc@google.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Joerg Roedel <joro@8bytes.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: X86: Fix exception untrigger on ret to user
Date: Mon, 28 Jun 2021 19:57:00 +0300	[thread overview]
Message-ID: <3e6c3da2-838e-5cf1-8d73-c59542a063b8@yandex.ru> (raw)
In-Reply-To: <CALMp9eRJedCx6AMW+gMBMeMvGRzn6uzB0wtAzTDRLdYMB1Kc5Q@mail.gmail.com>

28.06.2021 19:39, Jim Mattson пишет:
> Yes, with shadow paging, kvm intercepts all guest page faults. You
> should be able to replicate this behavior on modern CPUs by adding
> "ept=N" to the kvm_intel module parameters.

Yes, that works as a reproducer
on a more modern CPUs.
Thanks!


  reply	other threads:[~2021-06-28 16:57 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-27 23:38 [PATCH] KVM: X86: Fix exception untrigger on ret to user Stas Sergeev
2021-06-28  7:20 ` Vitaly Kuznetsov
2021-06-28  9:12   ` stsp
2021-06-28 10:07     ` Vitaly Kuznetsov
2021-06-28 10:32       ` stsp
2021-06-28 10:56         ` Vitaly Kuznetsov
2021-06-28 11:00           ` Vitaly Kuznetsov
2021-06-28 11:27           ` stsp
2021-06-28 16:39             ` Jim Mattson
2021-06-28 16:57               ` stsp [this message]
2021-06-28 16:19 ` Jim Mattson
2021-06-28 17:06   ` stsp
2021-06-28 17:44     ` Jim Mattson
2021-06-28 22:23   ` stsp
2021-06-28 22:35     ` Jim Mattson
2021-06-28 22:52       ` stsp
2021-06-28 12:46 Stas Sergeev

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