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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


      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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