From: "Gotou, Yasunori/五島 康文" <y-goto@jp.fujitsu.com>
To: Jason Gunthorpe <jgg@nvidia.com>, Yasunori Goto <y-goto@fujitsu.com>
Cc: linux-rdma@vger.kernel.org, Doug Ledford <dledford@redhat.com>
Subject: Re: [PATCH] RDMA/core: EPERM should be returned when # of pined pages is over ulimit
Date: Fri, 27 Aug 2021 09:08:44 +0900 [thread overview]
Message-ID: <484727f0-38c1-1fdf-8eb7-d9b39b1ed2b7@jp.fujitsu.com> (raw)
In-Reply-To: <20210826133244.GQ1721383@nvidia.com>
On 2021/08/26 22:32, Jason Gunthorpe wrote:
> On Fri, Aug 20, 2021 at 05:45:54PM +0900, Yasunori Goto wrote:
>
>> static struct page **sev_pin_memory(struct kvm *kvm, unsigned long uaddr,
>> :
>> :
>> if (locked > lock_limit && !capable(CAP_IPC_LOCK)) {
>> pr_err("SEV: %lu locked pages exceed the lock limit of
>> %lu.\n", locked, lock_limit);
>> return ERR_PTR(-ENOMEM);
>> }
>>
>> I think it is better than nothing. How do you think?
>
> Unprivileged user space should not be allowed to cause the kernel to
> print messages.
Hmm... Ok. I see.
Thank you for your answer!
Bye,
---
Yasunori Goto
prev parent reply other threads:[~2021-08-27 0:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 8:27 [PATCH] RDMA/core: EPERM should be returned when # of pined pages is over ulimit Yasunori Goto
2021-08-19 23:10 ` Jason Gunthorpe
2021-08-20 0:36 ` Yasunori Goto
2021-08-20 8:45 ` Yasunori Goto
2021-08-26 13:32 ` Jason Gunthorpe
2021-08-27 0:08 ` Gotou, Yasunori/五島 康文 [this message]
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