linux-kernel - Re: [PATCH v3 01/13] X86/nVMX: handle_vmon: Read 4 bytes from guest memory

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Message-ID: <CALMp9eRBQQoB6d9j8EECQk-vp9j6M7d2d9BYrJuijHUj2-w75A@mail.gmail.com>
Date:   Mon, 22 Oct 2018 10:17:13 -0700
From:   Jim Mattson <jmattson@...gle.com>
To:     KarimAllah Ahmed <karahmed@...zon.de>
Cc:     kvm list <kvm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>
Subject: Re: [PATCH v3 01/13] X86/nVMX: handle_vmon: Read 4 bytes from guest memory

On Sat, Oct 20, 2018 at 3:22 PM, KarimAllah Ahmed <karahmed@...zon.de> wrote:
> Read the data directly from guest memory instead of the map->read->unmap
> sequence. This also avoids using kvm_vcpu_gpa_to_page() and kmap() which
> assumes that there is a "struct page" for guest memory.
>
> Suggested-by: Jim Mattson <jmattson@...gle.com>
> Signed-off-by: KarimAllah Ahmed <karahmed@...zon.de>
Reviewed-by: Jim Mattson <jmattson@...gle.com>