linux-kernel - Re: [PATCH] Drivers: hv: balloon: Remove dependencies on guest page size

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>] [day] [month] [year] [list]

Message-ID: <20191004154615.GK17454@sasha-vm>
Date:   Fri, 4 Oct 2019 11:46:15 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Michael Kelley <mikelley@...rosoft.com>
Cc:     Himadri Pandya <himadrispandya@...il.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "himadri18.07" <himadri18.07@...il.com>
Subject: Re: [PATCH] Drivers: hv: balloon: Remove dependencies on guest page
 size

On Wed, Sep 04, 2019 at 11:37:12PM +0000, Michael Kelley wrote:
>From: Himadri Pandya <himadrispandya@...il.com> Sent: Friday, August 16, 2019 9:09 PM
>>
>> Hyper-V assumes page size to be 4K. This might not be the case for
>> ARM64 architecture. Hence use hyper-v specific page size and page
>> shift definitions to avoid conflicts between different host and guest
>> page sizes on ARM64.
>>
>> Also, remove some old and incorrect comments and redefine ballooning
>> granularities to handle larger page sizes correctly.
>>
>> Signed-off-by: Himadri Pandya <himadri18.07@...il.com>
>> ---
>>  drivers/hv/hv_balloon.c | 25 ++++++++++++-------------
>>  1 file changed, 12 insertions(+), 13 deletions(-)
>>
>
>Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
>
>Thomas -- can you pick up this patch in the x86/hyperv branch of your
>tip tree along with the other patches to fix wrong page size assumptions?

I've queued this for hyperv-next, thanks!

--
Thanks,
Sasha