From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32793) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dZbwz-00088x-MC for qemu-devel@nongnu.org; Mon, 24 Jul 2017 07:55:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dZbww-00063B-K4 for qemu-devel@nongnu.org; Mon, 24 Jul 2017 07:55:01 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34664) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dZbww-00062P-AO for qemu-devel@nongnu.org; Mon, 24 Jul 2017 07:54:58 -0400 References: <1500921322-36875-1-git-send-email-peng.hao2@zte.com.cn> From: Eric Blake Message-ID: <961f88c4-c863-5242-c38a-f86dfa6834ee@redhat.com> Date: Mon, 24 Jul 2017 06:54:52 -0500 MIME-Version: 1.0 In-Reply-To: <1500921322-36875-1-git-send-email-peng.hao2@zte.com.cn> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="JWphJdlC0Vhj2Im5IiuaGnlMkVbWrsDSL" Subject: Re: [Qemu-devel] [PATCH V3] rtc: fix a infinite loop in windows vm startup List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peng Hao , mst@redhat.com, pbonzini@redhat.com Cc: Liu Yi , qemu-devel@nongnu.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --JWphJdlC0Vhj2Im5IiuaGnlMkVbWrsDSL From: Eric Blake To: Peng Hao , mst@redhat.com, pbonzini@redhat.com Cc: Liu Yi , qemu-devel@nongnu.org Message-ID: <961f88c4-c863-5242-c38a-f86dfa6834ee@redhat.com> Subject: Re: [Qemu-devel] [PATCH V3] rtc: fix a infinite loop in windows vm startup References: <1500921322-36875-1-git-send-email-peng.hao2@zte.com.cn> In-Reply-To: <1500921322-36875-1-git-send-email-peng.hao2@zte.com.cn> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 07/24/2017 01:35 PM, Peng Hao wrote: > When a windows vm starts, periodic timer of rtc will stop several times= =2E > windows kernel will check whether REG_A_UIP is changed. REG_C's interru= pt > flags will not be cleared when periodic timer stops and the update time= r > will switch to alarm timer. So the expiration time of alarm timer is ve= ry > long and REG_A_UIP will not vary.At last windows kernel will repeat to = > check REG_A_UIP all the time. >=20 > Signed-off-by: Peng Hao > Signed-off-by: Liu Yi > --- When posting a v3, it's useful to tell us (after the --- separator) what changed from v2, to help us focus on why a v3 was needed. --=20 Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org --JWphJdlC0Vhj2Im5IiuaGnlMkVbWrsDSL Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEzBAEBCAAdFiEEccLMIrHEYCkn0vOqp6FrSiUnQ2oFAll14AwACgkQp6FrSiUn Q2pplggAh2pVfNySXmTy1b1wiRQu2pZtYPAr+Sgo6cG4XuPr0UoreosoPGOmRkp0 b+enGxURCPtu930Sq7Buh6Fr6V9qc0CQGxk6CupH3HIBGqrRzXI4RHtLseymNERa Frm6iqfm5HS/cH4oRMS0XGgPG0dFxBVSX43exEGxJsovCxkXWt9+fjMsOvEwki6Y D4fT0VG3wNIRu2HB6AK7OQ9zTqTfp6XWjPsf5J3kFnZjC/8xClflzie0rq4vvvA0 iJ8nANyhyUl4o0O0+Dr2yT7vPyzZoGSwStGQD2Nj4s/LAWWzx3nw501jZscTp+Vf P5KMfJehwbTztzkNt7OD4ed+euTlkg== =AWfR -----END PGP SIGNATURE----- --JWphJdlC0Vhj2Im5IiuaGnlMkVbWrsDSL--