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Thu, 05 Dec 2024 12:05:25 +0000 Received: from smtpav03.wdc07v.mail.ibm.com (smtpav03.wdc07v.mail.ibm.com [10.39.53.230]) by smtprelay02.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 4B5C5MHX22741590 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 5 Dec 2024 12:05:22 GMT Received: from smtpav03.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3CFB35805D; Thu, 5 Dec 2024 12:05:22 +0000 (GMT) Received: from smtpav03.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0C6375805C; Thu, 5 Dec 2024 12:05:18 +0000 (GMT) Received: from [9.43.89.208] (unknown [9.43.89.208]) by smtpav03.wdc07v.mail.ibm.com (Postfix) with ESMTP; Thu, 5 Dec 2024 12:05:17 +0000 (GMT) Message-ID: <91887947-de4a-40d7-a02d-85e04c5da549@linux.ibm.com> Date: Thu, 5 Dec 2024 17:35:15 +0530 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] powerpc: increase MIN RMA size for CAS negotiation To: Avnish Chouhan , linuxppc-dev@lists.ozlabs.org Cc: mpe@ellerman.id.au, brking@linux.ibm.com, meghanaprakash@in.ibm.com, sourabhjain@linux.ibm.com References: <20241205101045.27069-1-avnish@linux.ibm.com> Content-Language: en-US From: Madhavan Srinivasan In-Reply-To: <20241205101045.27069-1-avnish@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: vsssPiLTrVC6tfIucKfvynzijoiQXkCD X-Proofpoint-GUID: vsssPiLTrVC6tfIucKfvynzijoiQXkCD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-15_01,2024-10-11_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 mlxlogscore=999 malwarescore=0 spamscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 bulkscore=0 adultscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412050087 On 12/5/24 3:40 PM, Avnish Chouhan wrote: > Change RMA size from 512 MB to 768 MB which will result > in more RMA at boot time for PowerPC. When PowerPC LPAR use/uses vTPM, > Secure Boot or FADump, the 512 MB RMA memory is not sufficient for > booting. With this 512 MB RMA, GRUB2 run out of memory and unable to > load the necessary. Sometimes even usage of CDROM which requires more > memory for installation along with the options mentioned above troubles > the boot memory and result in boot failures. Increasing the RMA size > will resolves multiple out of memory issues observed in PowerPC. Can you add more on the failure details here list a stack trace or dump, also is there a selftest to verify the fix in qemu or lpar? > > > Signed-off-by: Avnish Chouhan > --- > arch/powerpc/kernel/prom_init.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c > index fbb68fc28ed3..c42fd5a826c0 100644 > --- a/arch/powerpc/kernel/prom_init.c > +++ b/arch/powerpc/kernel/prom_init.c > @@ -1061,7 +1061,7 @@ static const struct ibm_arch_vec ibm_architecture_vec_template __initconst = { > .virt_base = cpu_to_be32(0xffffffff), > .virt_size = cpu_to_be32(0xffffffff), > .load_base = cpu_to_be32(0xffffffff), > - .min_rma = cpu_to_be32(512), /* 512MB min RMA */ > + .min_rma = cpu_to_be32(768), /* 768MB min RMA */ > .min_load = cpu_to_be32(0xffffffff), /* full client load */ > .min_rma_percent = 0, /* min RMA percentage of total RAM */ > .max_pft_size = 48, /* max log_2(hash table size) */