From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Tom Lendacky <thomas.lendacky@amd.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
linux-arch@vger.kernel.org, linux-efi@vger.kernel.org,
kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org,
kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
kasan-dev@googlegroups.com, linux-mm@kvack.org,
iommu@lists.linux-foundation.org
Cc: "Brijesh Singh" <brijesh.singh@amd.com>,
"Toshimitsu Kani" <toshi.kani@hpe.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Matt Fleming" <matt@codeblueprint.co.uk>,
"Alexander Potapenko" <glider@google.com>,
"H. Peter Anvin" <hpa@zytor.com>,
"Larry Woodman" <lwoodman@redhat.com>,
"Jonathan Corbet" <corbet@lwn.net>,
"Joerg Roedel" <joro@8bytes.org>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Ingo Molnar" <mingo@redhat.com>,
"Andrey Ryabinin" <aryabinin@virtuozzo.com>,
"Dave Young" <dyoung@redhat.com>,
"Rik van Riel" <riel@redhat.com>, "Arnd Bergmann" <arnd@arndb.de>,
"Borislav Petkov" <bp@alien8.de>,
"Andy Lutomirski" <luto@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Dmitry Vyukov" <dvyukov@google.com>,
"Juergen Gross" <jgross@suse.com>,
xen-devel <xen-devel@lists.xen.org>,
"Paolo Bonzini" <pbonzini@redhat.com>
Subject: Re: [PATCH v6 10/34] x86, x86/mm, x86/xen, olpc: Use __va() against just the physical address in cr3
Date: Fri, 9 Jun 2017 15:42:24 -0400 [thread overview]
Message-ID: <d1931930-78d6-ebb1-755c-80bc88a397ed__9911.71144783056$1497037480$gmane$org@oracle.com> (raw)
In-Reply-To: <33f20df0-bf71-bd9d-7a7e-4fb5e8793400@amd.com>
>>
>> PV guests don't go through Linux x86 early boot code. They start at
>> xen_start_kernel() (well, xen-head.S:startup_xen(), really) and merge
>> with baremetal path at x86_64_start_reservations() (for 64-bit).
>>
>
> Ok, I don't think anything needs to be done then. The sme_me_mask is set
> in sme_enable() which is only called from head_64.S. If the sme_me_mask
> isn't set then SME won't be active. The feature will just report the
> capability of the processor, but that doesn't mean it is active. If you
> still want the feature to be clobbered we can do that, though.
I'd prefer to explicitly clear to avoid any ambiguity.
-boris
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prev parent reply other threads:[~2017-06-09 19:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170607191309.28645.15241.stgit@tlendack-t1.amdoffice.net>
[not found] ` <20170607191453.28645.92256.stgit@tlendack-t1.amdoffice.net>
2017-06-07 22:06 ` [PATCH v6 10/34] x86, x86/mm, x86/xen, olpc: Use __va() against just the physical address in cr3 Boris Ostrovsky
[not found] ` <b15e8924-4069-b5fa-adb2-86c164b1dd36@oracle.com>
2017-06-08 13:42 ` Tom Lendacky
[not found] ` <4a7376fb-abfc-8edd-42b7-38de461ac65e@amd.com>
2017-06-08 20:51 ` Boris Ostrovsky
[not found] ` <67fe69ac-a213-8de3-db28-0e54bba95127@oracle.com>
2017-06-08 21:02 ` Tom Lendacky
[not found] ` <fcb196c8-f1eb-a38c-336c-7bd3929b029e@amd.com>
2017-06-08 21:17 ` Boris Ostrovsky
[not found] ` <12c7e511-996d-cf60-3a3b-0be7b41bd85b@oracle.com>
2017-06-08 22:01 ` Andrew Cooper
[not found] ` <d37917b1-8e49-e8a8-b9ac-59491331640f@citrix.com>
2017-06-09 18:36 ` Tom Lendacky
[not found] ` <9725c503-2e33-2365-87f5-f017e1cbe9b6@amd.com>
2017-06-09 18:43 ` Boris Ostrovsky
[not found] ` <8e8eac45-95be-f1b5-6f44-f131d275f7bc@oracle.com>
2017-06-09 18:54 ` Andrew Cooper
2017-06-09 18:59 ` Tom Lendacky
[not found] ` <33f20df0-bf71-bd9d-7a7e-4fb5e8793400@amd.com>
2017-06-09 19:42 ` Boris Ostrovsky [this message]
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