From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Xu <peterx@redhat.com>, kvm@vger.kernel.org
Cc: Sean Christopherson <sean.j.christopherson@intel.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: Re: [PATCH] KVM: Remove async parameter for hva_to_pfn_remapped()
Date: Thu, 16 Apr 2020 18:13:57 +0200 [thread overview]
Message-ID: <7f576843-6b64-6561-05ee-730326249409@redhat.com> (raw)
In-Reply-To: <20200416155903.267414-1-peterx@redhat.com>
On 16/04/20 17:59, Peter Xu wrote:
> We always do synchronous fault in for those pages.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
>
> Or, does it make sense to allow async pf for PFNMAP|IO too? I just
> didn't figure out why not...
> ---
I think async pf would use FAULT_FLAG_ALLOW_RETRY |
FAULT_FLAG_RETRY_NOWAIT. On failure you would set *async = true.
In practice I don't think fixup_user_fault is likely to do anything
asynchronously.
Paolo
next prev parent reply other threads:[~2020-04-16 16:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-16 15:59 [PATCH] KVM: Remove async parameter for hva_to_pfn_remapped() Peter Xu
2020-04-16 16:13 ` Paolo Bonzini [this message]
2020-04-16 16:22 ` Peter Xu
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