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Tue, 12 Sep 2023 20:25:20 GMT Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AEDCD5805D; Tue, 12 Sep 2023 20:25:19 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9D12458060; Tue, 12 Sep 2023 20:25:19 +0000 (GMT) Received: from mamboa4.aus.stglabs.ibm.com (unknown [9.3.84.87]) by smtpav06.dal12v.mail.ibm.com (Postfix) with ESMTPS; Tue, 12 Sep 2023 20:25:19 +0000 (GMT) Received: from mamboa4.aus.stglabs.ibm.com (localhost [127.0.0.1]) by mamboa4.aus.stglabs.ibm.com (Postfix) with ESMTPS id 1D64916A073D; Tue, 12 Sep 2023 15:25:19 -0500 (CDT) Received: (from mglenn@localhost) by mamboa4.aus.stglabs.ibm.com (8.15.2/8.15.2/Submit) id 38CKPJZs3382667; Tue, 12 Sep 2023 15:25:19 -0500 From: Glenn Miles To: qemu-devel@nongnu.org Cc: Glenn Miles , Daniel Henrique Barboza , =?utf-8?q?C=C3=A9dric_Le_G?= =?utf-8?q?oater?= , David Gibson , Greg Kurz , Nicholas Piggin , qemu-ppc@nongnu.org (open list:PowerPC TCG CPUs) Subject: [PATCH 4/4] target/ppc: Add migration support for BHRB Date: Tue, 12 Sep 2023 15:25:14 -0500 Message-Id: <20230912202514.3382619-1-milesg@linux.vnet.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230912192144.3330174-1-milesg@linux.vnet.ibm.com> References: <20230912192144.3330174-1-milesg@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: OM8iAr0ZEYP_zqC8o2Xakj0nIC1RuEJt X-Proofpoint-GUID: Xg8v63JE_eo2Kk6oWNF9xk_QwypTzWYA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-12_19,2023-09-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=808 clxscore=1015 malwarescore=0 adultscore=0 suspectscore=0 bulkscore=0 lowpriorityscore=0 spamscore=0 phishscore=0 priorityscore=1501 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309120169 Received-SPF: none client-ip=148.163.156.1; envelope-from=mglenn@mamboa4.aus.stglabs.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Adds migration support for Branch History Rolling Buffer (BHRB) internal state. Signed-off-by: Glenn Miles --- target/ppc/machine.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/target/ppc/machine.c b/target/ppc/machine.c index b195fb4dc8..89146969c8 100644 --- a/target/ppc/machine.c +++ b/target/ppc/machine.c @@ -314,6 +314,7 @@ static int cpu_post_load(void *opaque, int version_id) if (tcg_enabled()) { pmu_mmcr01a_updated(env); + hreg_bhrb_filter_update(env); } return 0; @@ -670,6 +671,27 @@ static const VMStateDescription vmstate_compat = { } }; +#ifdef TARGET_PPC64 +static bool bhrb_needed(void *opaque) +{ + PowerPCCPU *cpu = opaque; + return (cpu->env.flags & POWERPC_FLAG_BHRB) != 0; +} + +static const VMStateDescription vmstate_bhrb = { + .name = "cpu/bhrb", + .version_id = 1, + .minimum_version_id = 1, + .needed = bhrb_needed, + .fields = (VMStateField[]) { + VMSTATE_UINTTL(env.bhrb_num_entries, PowerPCCPU), + VMSTATE_UINTTL(env.bhrb_offset, PowerPCCPU), + VMSTATE_UINT64_ARRAY(env.bhrb, PowerPCCPU, BHRB_MAX_NUM_ENTRIES), + VMSTATE_END_OF_LIST() + } +}; +#endif + const VMStateDescription vmstate_ppc_cpu = { .name = "cpu", .version_id = 5, @@ -716,6 +738,7 @@ const VMStateDescription vmstate_ppc_cpu = { #ifdef TARGET_PPC64 &vmstate_tm, &vmstate_slb, + &vmstate_bhrb, #endif /* TARGET_PPC64 */ &vmstate_tlb6xx, &vmstate_tlbemb,