From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35545) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drSI7-0001eK-AN for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1drSI2-0004eM-R1 for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:35 -0400 Received: from 3.mo2.mail-out.ovh.net ([46.105.58.226]:57314) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1drSI2-0004di-KB for qemu-devel@nongnu.org; Mon, 11 Sep 2017 13:14:30 -0400 Received: from player770.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo2.mail-out.ovh.net (Postfix) with ESMTP id A79E4AB236 for ; Mon, 11 Sep 2017 19:14:29 +0200 (CEST) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Mon, 11 Sep 2017 19:12:28 +0200 Message-Id: <20170911171235.29331-15-clg@kaod.org> In-Reply-To: <20170911171235.29331-1-clg@kaod.org> References: <20170911171235.29331-1-clg@kaod.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [RFC PATCH v2 14/21] ppc/xive: add support for the SET_OS_PENDING command List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org, qemu-devel@nongnu.org, David Gibson , Benjamin Herrenschmidt , Alexey Kardashevskiy , Alexander Graf Cc: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Adjusting the Interrupt Pending Buffer for the O/S would allow a CPU to process event queues of other priorities during one physical interrupt cycle. This is not currently used by the XIVE support for sPAPR in Linux but it is by the hypervisor. Signed-off-by: C=C3=A9dric Le Goater --- hw/intc/spapr_xive.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index ad3ff91b13ea..ad3f03e37401 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -162,7 +162,14 @@ static bool spapr_xive_tm_is_readonly(uint8_t index) static void spapr_xive_tm_write_special(ICPState *icp, hwaddr offset, uint64_t value, unsigned size) { - /* TODO: support TM_SPC_SET_OS_PENDING */ + if (offset =3D=3D TM_SPC_SET_OS_PENDING && size =3D=3D 1) { + icp->tima_os[TM_IPB] |=3D priority_to_ipb(value & 0xff); + icp->tima_os[TM_PIPR] =3D ipb_to_pipr(icp->tima_os[TM_IPB]); + spapr_xive_icp_notify(icp); + } else { + qemu_log_mask(LOG_GUEST_ERROR, "XIVE: invalid TIMA write @%" + HWADDR_PRIx" size %d\n", offset, size); + } =20 /* TODO: support TM_SPC_ACK_OS_EL */ } --=20 2.13.5