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From: Paolo Bonzini <pbonzini@redhat.com>
To: Vitaly Kuznetsov <vkuznets@redhat.com>, kvm@vger.kernel.org
Cc: Sean Christopherson <seanjc@google.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>,
	Siddharth Chandrasekaran <sidcha@amazon.de>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4] KVM: x86: hyper-v: XMM fast hypercalls fixes
Date: Fri, 25 Feb 2022 14:17:04 +0100	[thread overview]
Message-ID: <f398b5de-c867-98a4-a716-b18939cfd0ef@redhat.com> (raw)
In-Reply-To: <871qzrdr6x.fsf@redhat.com>

On 2/25/22 14:13, Vitaly Kuznetsov wrote:
> Let's say we have 1 half of XMM0 consumed. Now:
> 
>   i = 0;
>   j = 1;
>   if (1)
>       sparse_banks[0] = sse128_lo(hc->xmm[0]);
> 
>   This doesn't look right as we need to get the upper half of XMM0.
> 
>   I guess it should be reversed,
> 
>       if (j % 2)
>           sparse_banks[i] = sse128_hi(hc->xmm[j / 2]);
>       else
>           sparse_banks[i] = sse128_lo(hc->xmm[j / 2]);

Yeah, of course.

Thanks!

Paolo


  reply	other threads:[~2022-02-25 13:17 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-22 15:46 [PATCH 0/4] KVM: x86: hyper-v: XMM fast hypercalls fixes Vitaly Kuznetsov
2022-02-22 15:46 ` [PATCH 1/4] KVM: x86: hyper-v: Drop redundant 'ex' parameter from kvm_hv_send_ipi() Vitaly Kuznetsov
2022-02-25 18:21   ` Maxim Levitsky
2022-02-28  9:58     ` Vitaly Kuznetsov
2022-02-28 10:45   ` Siddharth Chandrasekaran
2022-02-22 15:46 ` [PATCH 2/4] KVM: x86: hyper-v: Drop redundant 'ex' parameter from kvm_hv_flush_tlb() Vitaly Kuznetsov
2022-02-25 18:22   ` Maxim Levitsky
2022-02-28 10:46   ` Siddharth Chandrasekaran
2022-02-22 15:46 ` [PATCH 3/4] KVM: x86: hyper-v: Fix the maximum number of sparse banks for XMM fast TLB flush hypercalls Vitaly Kuznetsov
2022-02-28 10:47   ` Siddharth Chandrasekaran
2022-02-22 15:46 ` [PATCH 4/4] KVM: x86: hyper-v: HVCALL_SEND_IPI_EX is an XMM fast hypercall Vitaly Kuznetsov
2022-02-25 18:33   ` Maxim Levitsky
2022-02-28 10:02     ` Vitaly Kuznetsov
2022-02-28 10:48   ` Siddharth Chandrasekaran
2022-02-25 11:55 ` [PATCH 0/4] KVM: x86: hyper-v: XMM fast hypercalls fixes Paolo Bonzini
2022-02-25 13:13   ` Vitaly Kuznetsov
2022-02-25 13:17     ` Paolo Bonzini [this message]
2022-02-28 10:52       ` Siddharth Chandrasekaran
2022-02-28 11:09         ` Vitaly Kuznetsov
2022-02-28 16:18           ` Siddharth Chandrasekaran

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