From: Dave Hansen <dave.hansen@intel.com>
To: 'Joerg Roedel' <joro@8bytes.org>, David Laight <David.Laight@aculab.com>
Cc: "x86@kernel.org" <x86@kernel.org>,
Hyunwook Baek <baekhw@google.com>, Joerg Roedel <jroedel@suse.de>,
"stable@vger.kernel.org" <stable@vger.kernel.org>,
"hpa@zytor.com" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Jiri Slaby <jslaby@suse.cz>,
Dan Williams <dan.j.williams@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Juergen Gross <jgross@suse.com>,
Kees Cook <keescook@chromium.org>,
David Rientjes <rientjes@google.com>,
Cfir Cohen <cfir@google.com>, Erdem Aktas <erdemaktas@google.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mike Stunes <mstunes@vmware.com>,
Sean Christopherson <seanjc@google.com>,
Martin Radev <martin.b.radev@gmail.com>,
Arvind Sankar <nivedita@alum.mit.edu>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>
Subject: Re: [PATCH 3/6] x86/sev-es: Use __put_user()/__get_user
Date: Wed, 12 May 2021 08:59:39 -0700 [thread overview]
Message-ID: <52d51917-4a58-f760-6fb7-80b5759231e6@intel.com> (raw)
In-Reply-To: <YJuTzhSp2XAJIYlv@8bytes.org>
On 5/12/21 1:37 AM, 'Joerg Roedel' wrote:
> I also thought about adding page_fault_disable()/page_fault_enable()
> calls, but being in atomic context is enough according to the
> faulthandler_disabled() implementation.
That would be nice to add to a comment:
page_fault_disable()/page_fault_enable() are not needed because of the
context this must be called in.
WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave.hansen@intel.com>
To: 'Joerg Roedel' <joro@8bytes.org>, David Laight <David.Laight@aculab.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
Arvind Sankar <nivedita@alum.mit.edu>,
"hpa@zytor.com" <hpa@zytor.com>, Jiri Slaby <jslaby@suse.cz>,
"x86@kernel.org" <x86@kernel.org>,
David Rientjes <rientjes@google.com>,
Martin Radev <martin.b.radev@gmail.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Joerg Roedel <jroedel@suse.de>, Kees Cook <keescook@chromium.org>,
Cfir Cohen <cfir@google.com>, Hyunwook Baek <baekhw@google.com>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
Andy Lutomirski <luto@kernel.org>,
Dan Williams <dan.j.williams@intel.com>,
Juergen Gross <jgross@suse.com>, Mike Stunes <mstunes@vmware.com>,
Sean Christopherson <seanjc@google.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Erdem Aktas <erdemaktas@google.com>
Subject: Re: [PATCH 3/6] x86/sev-es: Use __put_user()/__get_user
Date: Wed, 12 May 2021 08:59:39 -0700 [thread overview]
Message-ID: <52d51917-4a58-f760-6fb7-80b5759231e6@intel.com> (raw)
In-Reply-To: <YJuTzhSp2XAJIYlv@8bytes.org>
On 5/12/21 1:37 AM, 'Joerg Roedel' wrote:
> I also thought about adding page_fault_disable()/page_fault_enable()
> calls, but being in atomic context is enough according to the
> faulthandler_disabled() implementation.
That would be nice to add to a comment:
page_fault_disable()/page_fault_enable() are not needed because of the
context this must be called in.
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Virtualization@lists.linux-foundation.org
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next prev parent reply other threads:[~2021-05-12 15:59 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 7:54 [PATCH 0/6] x86/sev-es: Fixes for SEV-ES guest support Joerg Roedel
2021-05-12 7:54 ` Joerg Roedel
2021-05-12 7:54 ` [PATCH 1/6] x86/sev-es: Don't return NULL from sev_es_get_ghcb() Joerg Roedel
2021-05-12 7:54 ` Joerg Roedel
2021-05-12 7:54 ` [PATCH 2/6] x86/sev-es: Forward page-faults which happen during emulation Joerg Roedel
2021-05-12 7:54 ` Joerg Roedel
2021-05-12 17:31 ` Sean Christopherson
2021-05-19 13:16 ` Joerg Roedel
2021-05-19 13:16 ` Joerg Roedel
2021-05-12 7:54 ` [PATCH 3/6] x86/sev-es: Use __put_user()/__get_user Joerg Roedel
2021-05-12 7:54 ` Joerg Roedel
2021-05-12 8:04 ` David Laight
2021-05-12 8:04 ` David Laight
2021-05-12 8:04 ` David Laight
2021-05-12 8:16 ` Juergen Gross
2021-05-12 8:16 ` Juergen Gross via Virtualization
2021-05-12 8:16 ` Juergen Gross
2021-05-12 8:50 ` 'Joerg Roedel'
2021-05-12 8:50 ` 'Joerg Roedel'
2021-05-12 8:50 ` 'Joerg Roedel'
2021-05-12 8:58 ` Juergen Gross
2021-05-12 8:58 ` Juergen Gross via Virtualization
2021-05-12 8:58 ` Juergen Gross
2021-05-12 9:31 ` David Laight
2021-05-12 9:31 ` David Laight
2021-05-12 9:31 ` David Laight
2021-05-12 9:32 ` Joerg Roedel
2021-05-12 9:32 ` Joerg Roedel
2021-05-12 9:32 ` Joerg Roedel
2021-05-19 11:33 ` 'Joerg Roedel'
2021-05-19 11:33 ` 'Joerg Roedel'
2021-05-19 11:33 ` 'Joerg Roedel'
2021-05-12 8:37 ` 'Joerg Roedel'
2021-05-12 8:37 ` 'Joerg Roedel'
2021-05-12 8:37 ` 'Joerg Roedel'
2021-05-12 15:59 ` Dave Hansen [this message]
2021-05-12 15:59 ` Dave Hansen
2021-05-12 15:59 ` Dave Hansen
2021-05-12 15:57 ` Dave Hansen
2021-05-12 15:57 ` Dave Hansen
2021-05-12 16:00 ` Joerg Roedel
2021-05-12 16:00 ` Joerg Roedel
2021-05-12 7:54 ` [PATCH 4/6] Revert "x86/sev-es: Handle string port IO to kernel memory properly" Joerg Roedel
2021-05-12 7:54 ` Joerg Roedel
2021-05-12 17:38 ` Sean Christopherson
2021-05-19 12:22 ` Joerg Roedel
2021-05-19 12:22 ` Joerg Roedel
2021-05-12 7:54 ` [PATCH 5/6] x86/sev-es: Fix error message in runtime #VC handler Joerg Roedel
2021-05-12 7:54 ` Joerg Roedel
2021-05-12 7:54 ` [PATCH 6/6] x86/sev-es: Leave NMI-mode before sending signals Joerg Roedel
2021-05-12 7:54 ` Joerg Roedel
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