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Mon, 5 Oct 2020 18:51:57 +0200 (CEST) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: David Gibson Subject: [PATCH v2 2/6] spapr/xive: Add a warning when StoreEOI is activated on POWER8 CPUs Date: Mon, 5 Oct 2020 18:51:43 +0200 Message-Id: <20201005165147.526426-3-clg@kaod.org> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20201005165147.526426-1-clg@kaod.org> References: <20201005165147.526426-1-clg@kaod.org> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-10-05_11:2020-10-05, 2020-10-05 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 adultscore=0 malwarescore=0 priorityscore=1501 phishscore=0 mlxlogscore=667 impostorscore=0 lowpriorityscore=0 spamscore=0 clxscore=1034 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2010050117 Received-SPF: softfail client-ip=148.163.158.5; envelope-from=clg@kaod.org; helo=mx0a-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/05 12:52:05 X-ACL-Warn: Detected OS = Linux 3.x [generic] [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=no 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: qemu-devel@nongnu.org, =?utf-8?q?C=C3=A9dric_Le_Goater?= , qemu-ppc@nongnu.org, Greg Kurz , Gustavo Romero Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Cédric Le Goater --- hw/ppc/spapr_caps.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index 57c62c22e4cc..b0a9d0227db2 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -535,6 +535,14 @@ static void cap_storeeoi_apply(SpaprMachineState *spapr, uint8_t val, return; /* Disabled by default */ } + /* For POWER8 CPUs, setting StoreEOI is useless as XIVE is not used */ + if (!ppc_type_check_compat(machine->cpu_type, CPU_POWERPC_LOGICAL_3_00, 0, + spapr->max_compat_pvr)) { + warn_report("StoreEOI is for the XIVE interrupt mode " + "(POWER9 and above)"); + return; + } + /* Check host support when the KVM device is in use */ if (kvm_irqchip_in_kernel()) { if (!kvm_storeeoi) {