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Mon, 10 Aug 2026 18:39:31 GMT Received: from smtprelay03.dal12v.mail.ibm.com ([172.16.1.5]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4fxhfxwsch-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 10 Aug 2026 18:39:31 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (smtpav06.dal12v.mail.ibm.com [10.241.53.105]) by smtprelay03.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 67AIdUed22151700 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 10 Aug 2026 18:39:30 GMT Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 034955805E; Mon, 10 Aug 2026 18:39:30 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3481F58043; Mon, 10 Aug 2026 18:39:29 +0000 (GMT) Received: from [9.61.71.159] (unknown [9.61.71.159]) by smtpav06.dal12v.mail.ibm.com (Postfix) with ESMTP; Mon, 10 Aug 2026 18:39:29 +0000 (GMT) Message-ID: <8657378a-40e6-43d9-87bb-e7037bd2a124@linux.ibm.com> Date: Mon, 10 Aug 2026 14:39:28 -0400 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 0/1] target/s390x: Allow 2G hugepages guest backing To: Claudio Imbrenda , qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, pasic@linux.ibm.com, mhartmay@linux.ibm.com, david@kernel.org, mjrosato@linux.ibm.com, richard.henderson@linaro.org, iii@linux.ibm.com, cohuck@redhat.com References: <20260805103728.97602-1-imbrenda@linux.ibm.com> Content-Language: en-US From: Eric Farman Autocrypt: addr=farman@linux.ibm.com; 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envelope-from=farman@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 8/5/26 6:37 AM, Claudio Imbrenda wrote: > Allow mapping guest with 2G hugepages on hosts that support it. > > Add new helper functions to check whether hpages are in effect, and > which size. > > v2->v3: > * Remove dead code introduced in the previous version. > * Factor out the capability enablement and error reporting to avoid > duplicating code and error messages. > * Optimize the control flow and bring it back in line with the previous > behaviour regarding page sizes, i.e. assuming that if the page size > is neither 4K nor 1M, then it must be 2G. > > v1->v2: > * Rename the global variable to cap_hpage > * Use different values of cap_hpage to distinguish between hpage sizes > * Add wrappers to test for specific hpage sizes > > Claudio Imbrenda (1): > target/s390x: Allow 2G hugepages guest backing Thanks! Applied for 11.2 > > target/s390x/diag.c | 2 +- > target/s390x/kvm/kvm.c | 36 +++++++++++++++++------------------- > target/s390x/kvm/kvm_s390x.h | 2 +- > target/s390x/kvm/stubs.c | 2 +- > 4 files changed, 20 insertions(+), 22 deletions(-) >