linux-kernel - Re: [PATCH v8 07/43] arm64: RME: ioctls to create and configure realms

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

Message-ID: <9e5c26e9-a710-4ae6-ab2e-5706204d4f4f@arm.com>
Date: Thu, 1 May 2025 16:11:25 +0100
From: Steven Price <steven.price@....com>
To: Gavin Shan <gshan@...hat.com>, kvm@...r.kernel.org, kvmarm@...ts.linux.dev
Cc: Catalin Marinas <catalin.marinas@....com>, Marc Zyngier <maz@...nel.org>,
 Will Deacon <will@...nel.org>, James Morse <james.morse@....com>,
 Oliver Upton <oliver.upton@...ux.dev>,
 Suzuki K Poulose <suzuki.poulose@....com>, Zenghui Yu
 <yuzenghui@...wei.com>, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, Joey Gouly <joey.gouly@....com>,
 Alexandru Elisei <alexandru.elisei@....com>,
 Christoffer Dall <christoffer.dall@....com>, Fuad Tabba <tabba@...gle.com>,
 linux-coco@...ts.linux.dev,
 Ganapatrao Kulkarni <gankulkarni@...amperecomputing.com>,
 Shanker Donthineni <sdonthineni@...dia.com>, Alper Gun
 <alpergun@...gle.com>, "Aneesh Kumar K . V" <aneesh.kumar@...nel.org>
Subject: Re: [PATCH v8 07/43] arm64: RME: ioctls to create and configure
 realms

On 30/04/2025 06:39, Gavin Shan wrote:
> On 4/16/25 11:41 PM, Steven Price wrote:
[...]
>> diff --git a/arch/arm64/kvm/rme.c b/arch/arm64/kvm/rme.c
>> index 67cf2d94cb2d..dbb6521fe380 100644
>> --- a/arch/arm64/kvm/rme.c
>> +++ b/arch/arm64/kvm/rme.c
[...]
>> +
>> +static int kvm_create_realm(struct kvm *kvm)
>> +{
>> +    struct realm *realm = &kvm->arch.realm;
>> +    int ret;
>> +
>> +    if (!kvm_is_realm(kvm))
>> +        return -EINVAL;
> 
> This check is duplicate because the only caller kvm_realm_enable_cap()
> already
> has the check. So it can be dropped.

Ah, good spot - thanks!

Steve