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bh=P6l+6GC0LgvbBsnc1hlStKMXjECUinxVAPUr+NG8V4w=; b=H2h043qwyA2UTdK5iJr0zJAVZrwKRO6ZIPoomI9iDSQ15R4qxd9+BaqrOlYwiGyzCsJCkk TUUzjQQhbl/4eFKmkUQNiA8n3m5spz7rJkvSzlERe8qniZGluO/3+emsEOlDLynC8zvxjM me4SyNyg/zT2J7i16ZjmFzIQyPgWDrI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-586-n3O2AcmwOhW1UKMEv-bkxw-1; Thu, 20 May 2021 16:16:29 -0400 X-MC-Unique: n3O2AcmwOhW1UKMEv-bkxw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AF2FC8015F5 for ; Thu, 20 May 2021 20:16:28 +0000 (UTC) Received: from localhost (ovpn-115-27.rdu2.redhat.com [10.10.115.27]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6BE3660C04; Thu, 20 May 2021 20:16:26 +0000 (UTC) Date: Thu, 20 May 2021 16:16:26 -0400 From: Eduardo Habkost To: Vitaly Kuznetsov Subject: Re: [PATCH v6 08/19] i386: introduce hv_cpuid_cache Message-ID: <20210520201626.kdx2rla7s5rfcveo@habkost.net> References: <20210422161130.652779-1-vkuznets@redhat.com> <20210422161130.652779-9-vkuznets@redhat.com> MIME-Version: 1.0 In-Reply-To: <20210422161130.652779-9-vkuznets@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=ehabkost@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; envelope-from=ehabkost@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.39, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Marcelo Tosatti , qemu-devel@nongnu.org, Igor Mammedov Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Apr 22, 2021 at 06:11:19PM +0200, Vitaly Kuznetsov wrote: > Just like with cpuid_cache, it makes no sense to call > KVM_GET_SUPPORTED_HV_CPUID more than once and instead of (ab)using > env->features[] and/or trying to keep all the code in one place, it is > better to introduce persistent hv_cpuid_cache and hv_cpuid_get_host() > accessor to it. > > Note, hv_cpuid_get_fw() is converted to using hv_cpuid_get_host() > just to be removed later with Hyper-V specific feature words. > > Signed-off-by: Vitaly Kuznetsov Reviewed-by: Eduardo Habkost -- Eduardo