linux-kernel - Re: [PATCH] KVM: selftests: do not require 64GB in set_memory_region

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <93ff00d3-b369-e00e-f172-7cc5375a6485@huawei.com>
Date:   Fri, 2 Jul 2021 14:49:35 +0800
From:   Zenghui Yu <yuzenghui@...wei.com>
To:     Christian Borntraeger <borntraeger@...ibm.com>
CC:     Shuah Khan <shuah@...nel.org>, Paolo Bonzini <pbonzini@...hat.com>,
        <kvm@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-s390@...r.kernel.org>,
        <vkuznets@...hat.com>, <wanghaibin.wang@...wei.com>
Subject: Re: [PATCH] KVM: selftests: do not require 64GB in
 set_memory_region_test

On 2021/7/2 0:04, Christian Borntraeger wrote:
> Unless the user sets overcommit_memory or has plenty of swap, the latest
> changes to the testcase will result in ENOMEM failures for hosts with
> less than 64GB RAM. As we do not use much of the allocated memory, we
> can use MAP_NORESERVE to avoid this error.

Had a go on arm64:

Tested-by: Zenghui Yu <yuzenghui@...wei.com>

Thanks,
Zenghui