From: Paul Durrant <xadimgnik@gmail.com>
To: David Woodhouse <dwmw2@infradead.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Jonathan Corbet <corbet@lwn.net>,
Sean Christopherson <seanjc@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Shuah Khan <shuah@kernel.org>,
kvm@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v10 09/19] KVM: xen: separate initialization of shared_info cache and content
Date: Thu, 14 Dec 2023 14:00:28 +0000 [thread overview]
Message-ID: <fad44fb9-f57a-46e8-99f8-1c3d8e830cbe@xen.org> (raw)
In-Reply-To: <1556d890fac61e36b9546c5f520faa15e449bd55.camel@infradead.org>
On 14/12/2023 13:41, David Woodhouse wrote:
> On Mon, 2023-12-04 at 14:43 +0000, Paul Durrant wrote:
>> From: Paul Durrant <pdurrant@amazon.com>
>>
>> A subsequent patch will allow shared_info to be initialized using either a
>> GPA or a user-space (i.e. VMM) HVA. To make that patch cleaner, separate
>> the initialization of the shared_info content from the activation of the
>> pfncache.
>>
>> Signed-off-by: Paul Durrant <pdurrant@amazon.com>
>
>
> Spot the difference...
>
>> - /*
>> - * This code mirrors kvm_write_wall_clock() except that it writes
>> - * directly through the pfn cache and doesn't mark the page dirty.
>> - */
>> - wall_nsec = kvm_get_wall_clock_epoch(kvm);
>
>
>> + /*
>> + * This code mirrors kvm_write_wall_clock() except that it writes
>> + * directly through the pfn cache and doesn't mark the page dirty.
>> + */
>> + wall_nsec = ktime_get_real_ns() - get_kvmclock_ns(kvm);
>
> (Hint: it's commit 5d6d6a7d7e66a)
Ack.
>
> With that fixed,
>
> Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
>
Thanks.
next prev parent reply other threads:[~2023-12-14 14:00 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-04 14:43 [PATCH v10 00/19] KVM: xen: update shared_info and vcpu_info handling Paul Durrant
2023-12-04 14:43 ` [PATCH v10 01/19] KVM: pfncache: Add a map helper function Paul Durrant
2023-12-04 14:43 ` [PATCH v10 02/19] KVM: pfncache: remove unnecessary exports Paul Durrant
2023-12-04 14:43 ` [PATCH v10 03/19] KVM: xen: mark guest pages dirty with the pfncache lock held Paul Durrant
2023-12-04 14:43 ` [PATCH v10 04/19] KVM: pfncache: add a mark-dirty helper Paul Durrant
2023-12-04 14:43 ` [PATCH v10 05/19] KVM: pfncache: remove KVM_GUEST_USES_PFN usage Paul Durrant
2023-12-04 14:43 ` [PATCH v10 06/19] KVM: pfncache: stop open-coding offset_in_page() Paul Durrant
2023-12-04 14:43 ` [PATCH v10 07/19] KVM: pfncache: include page offset in uhva and use it consistently Paul Durrant
2023-12-04 14:43 ` [PATCH v10 08/19] KVM: pfncache: allow a cache to be activated with a fixed (userspace) HVA Paul Durrant
2023-12-04 14:43 ` [PATCH v10 09/19] KVM: xen: separate initialization of shared_info cache and content Paul Durrant
2023-12-14 13:41 ` David Woodhouse
2023-12-14 14:00 ` Paul Durrant [this message]
2023-12-04 14:43 ` [PATCH v10 10/19] KVM: xen: (re-)initialize shared_info if guest (32/64-bit) mode is set Paul Durrant
2023-12-14 13:44 ` David Woodhouse
2023-12-04 14:43 ` [PATCH v10 11/19] KVM: xen: allow shared_info to be mapped by fixed HVA Paul Durrant
2023-12-04 14:43 ` [PATCH v10 12/19] KVM: xen: allow vcpu_info " Paul Durrant
2023-12-04 14:43 ` [PATCH v10 13/19] KVM: selftests / xen: map shared_info using HVA rather than GFN Paul Durrant
2023-12-04 14:43 ` [PATCH v10 14/19] KVM: selftests / xen: re-map vcpu_info using HVA rather than GPA Paul Durrant
2023-12-04 14:43 ` [PATCH v10 15/19] KVM: xen: advertize the KVM_XEN_HVM_CONFIG_SHARED_INFO_HVA capability Paul Durrant
2023-12-04 14:43 ` [PATCH v10 16/19] KVM: xen: split up kvm_xen_set_evtchn_fast() Paul Durrant
2023-12-14 14:00 ` David Woodhouse
2023-12-14 14:20 ` David Woodhouse
2023-12-04 14:43 ` [PATCH v10 17/19] KVM: xen: don't block on pfncache locks in kvm_xen_set_evtchn_fast() Paul Durrant
2023-12-14 14:03 ` David Woodhouse
2023-12-04 14:43 ` [PATCH v10 18/19] KVM: pfncache: check the need for invalidation under read lock first Paul Durrant
2023-12-14 14:08 ` David Woodhouse
2023-12-04 14:43 ` [PATCH v10 19/19] KVM: xen: allow vcpu_info content to be 'safely' copied Paul Durrant
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