From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Dave Hansen <dave.hansen@intel.com>
Cc: x86@kernel.org, platform-driver-x86@vger.kernel.org,
sean.j.christopherson@intel.com, nhorman@redhat.com,
npmccallum@redhat.com, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
"open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
<linux-kernel@vger.kernel.org>,
"open list:INTEL SGX" <intel-sgx-kernel-dev@lists.01.org>
Subject: Re: [PATCH v11 09/13] x86, sgx: basic routines for enclave page cache
Date: Mon, 25 Jun 2018 12:01:12 +0300 [thread overview]
Message-ID: <2329657de3b24cd45db2ad4abaddf3d473da4fdf.camel@linux.intel.com> (raw)
In-Reply-To: <5226fbdc-dcad-4856-68bb-3219ab31b30d@intel.com>
On Tue, 2018-06-19 at 08:32 -0700, Dave Hansen wrote:
> > For 32-bit (albeit not supported at this point) it makes sense to always
> > use kmap_atomic_pfn() as the virtua address area is very limited.
>
> That makes no sense. 32-bit kernels have plenty of virtual address
> space if not using highmem.
AFAIK the vmalloc area is located in the last 128MB that and ioremap()
of EPC would consume a big portion of that.
> > KVM works only with writable MSRs. Driver works both with writable
> > and read-only MSRs.
>
> Could you help with my confusion by documenting this a bit?
Sure.
/Jarkko
next prev parent reply other threads:[~2018-06-25 9:01 UTC|newest]
Thread overview: 181+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-08 17:09 [PATCH v11 00/13] Intel SGX1 support Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 01/13] compiler.h, kasan: add __SANITIZE_ADDRESS__ check for __no_kasan_or_inline Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 02/13] x86, sgx: updated MAINTAINERS Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 03/13] x86, sgx: add SGX definitions to cpufeature Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 04/13] x86, sgx: add SGX definitions to msr-index.h Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:25 ` Dave Hansen
2018-06-19 13:18 ` Jarkko Sakkinen
2018-06-19 13:18 ` Jarkko Sakkinen
2018-06-19 14:01 ` Dave Hansen
2018-06-19 14:01 ` Dave Hansen
2018-06-21 17:22 ` Jarkko Sakkinen
2018-06-21 17:22 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 05/13] x86, cpufeatures: add Intel-defined SGX leaf CPUID_12_EAX Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 06/13] crypto: aesni: add minimal build option for SGX LE Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:27 ` Dave Hansen
2018-06-11 15:24 ` Sean Christopherson
2018-06-08 17:09 ` [PATCH v11 07/13] x86, sgx: detect Intel SGX Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:36 ` Dave Hansen
2018-06-18 21:36 ` [intel-sgx-kernel-dev] " Andy Lutomirski
2018-06-25 7:39 ` Jarkko Sakkinen
2018-06-19 13:33 ` Jarkko Sakkinen
2018-06-19 13:33 ` Jarkko Sakkinen
2018-06-11 11:35 ` Neil Horman
2018-06-19 13:34 ` Jarkko Sakkinen
2018-06-19 13:34 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 08/13] x86, sgx: added ENCLS wrappers Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:43 ` Dave Hansen
2018-06-19 13:25 ` Jarkko Sakkinen
2018-06-19 13:25 ` Jarkko Sakkinen
2018-06-20 13:12 ` Sean Christopherson
2018-06-20 13:12 ` Sean Christopherson
2018-06-25 9:16 ` Jarkko Sakkinen
2018-06-25 9:16 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 09/13] x86, sgx: basic routines for enclave page cache Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 18:21 ` Jethro Beekman
2018-06-18 21:33 ` [intel-sgx-kernel-dev] " Andy Lutomirski
2018-06-25 7:36 ` Jarkko Sakkinen
2018-06-19 14:08 ` Jarkko Sakkinen
2018-06-19 14:08 ` Jarkko Sakkinen
2018-06-19 15:44 ` Jethro Beekman
2018-06-19 15:44 ` Jethro Beekman
2018-06-08 18:24 ` Dave Hansen
2018-06-19 14:57 ` Jarkko Sakkinen
2018-06-19 14:57 ` Jarkko Sakkinen
2018-06-19 15:19 ` Neil Horman
2018-06-19 15:19 ` Neil Horman
2018-06-19 15:32 ` Dave Hansen
2018-06-19 15:32 ` Dave Hansen
2018-06-25 9:01 ` Jarkko Sakkinen [this message]
2018-06-25 9:01 ` Jarkko Sakkinen
2018-06-19 15:59 ` Sean Christopherson
2018-06-19 15:59 ` Sean Christopherson
2018-06-25 9:14 ` Jarkko Sakkinen
2018-06-25 9:14 ` Jarkko Sakkinen
2018-06-10 5:32 ` [intel-sgx-kernel-dev] " Andy Lutomirski
2018-06-11 15:12 ` Sean Christopherson
2018-06-20 13:21 ` Sean Christopherson
2018-06-20 13:21 ` Sean Christopherson
2018-06-25 9:21 ` Jarkko Sakkinen
2018-06-25 9:21 ` Jarkko Sakkinen
2018-06-25 16:14 ` Neil Horman
2018-06-25 16:14 ` Neil Horman
2018-06-20 15:26 ` Sean Christopherson
2018-06-20 15:26 ` Sean Christopherson
2018-06-25 9:21 ` Jarkko Sakkinen
2018-06-25 9:21 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 10/13] intel_sgx: driver for Intel Software Guard Extensions Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 19:35 ` Dave Hansen
2018-06-19 13:29 ` Jarkko Sakkinen
2018-06-19 13:29 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 11/13] intel_sgx: ptrace() support Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 18:34 ` Dave Hansen
2018-06-11 15:02 ` Sean Christopherson
2018-06-19 13:38 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 12/13] intel_sgx: driver documentation Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 18:32 ` Jethro Beekman
2018-06-19 13:30 ` Jarkko Sakkinen
2018-06-19 13:30 ` Jarkko Sakkinen
2018-06-08 21:41 ` Randy Dunlap
2018-06-08 21:41 ` Randy Dunlap
2018-06-19 13:31 ` Jarkko Sakkinen
2018-06-19 13:31 ` Jarkko Sakkinen
2018-06-08 17:09 ` [PATCH v11 13/13] intel_sgx: in-kernel launch enclave Jarkko Sakkinen
2018-06-08 17:09 ` Jarkko Sakkinen
2018-06-08 18:50 ` [intel-sgx-kernel-dev] " Andy Lutomirski
2018-06-19 15:05 ` Jarkko Sakkinen
2018-06-10 5:39 ` Andy Lutomirski
2018-06-11 5:17 ` Andy Lutomirski
2018-06-11 11:52 ` Neil Horman
2018-06-12 4:55 ` Andy Lutomirski
2018-06-12 17:45 ` Neil Horman
2018-06-18 21:58 ` Andy Lutomirski
2018-06-19 13:17 ` Neil Horman
2018-06-20 16:28 ` Nathaniel McCallum
2018-06-20 18:16 ` Jethro Beekman
2018-06-20 18:39 ` Jethro Beekman
2018-06-20 21:01 ` Sean Christopherson
2018-06-21 12:32 ` Nathaniel McCallum
2018-06-21 15:29 ` Neil Horman
2018-06-21 19:11 ` Nathaniel McCallum
2018-06-21 21:20 ` Sean Christopherson
2018-06-25 21:00 ` Nathaniel McCallum
2018-06-25 22:35 ` Sean Christopherson
2018-06-21 22:48 ` Andy Lutomirski
2018-06-25 21:06 ` Nathaniel McCallum
2018-06-25 23:40 ` Andy Lutomirski
2018-06-25 9:41 ` Jarkko Sakkinen
2018-06-25 15:45 ` Andy Lutomirski
2018-06-25 21:28 ` Nathaniel McCallum
2018-06-26 8:43 ` Jarkko Sakkinen
2018-06-26 15:01 ` Nathaniel McCallum
2018-06-27 15:31 ` Jarkko Sakkinen
2018-06-21 12:12 ` Nathaniel McCallum
2018-06-25 9:27 ` Jarkko Sakkinen
2018-06-25 21:26 ` Nathaniel McCallum
2018-06-20 7:23 ` Jarkko Sakkinen
2018-06-12 10:50 ` [PATCH v11 00/13] Intel SGX1 support Pavel Machek
2018-06-12 10:50 ` Pavel Machek
2018-06-19 14:59 ` Jarkko Sakkinen
2018-06-19 14:59 ` Jarkko Sakkinen
2018-06-19 14:59 ` Jarkko Sakkinen
2018-06-19 20:04 ` Pavel Machek
2018-06-19 20:04 ` Pavel Machek
2018-06-19 20:23 ` Peter Zijlstra
2018-06-19 20:23 ` Peter Zijlstra
2018-06-19 20:23 ` Peter Zijlstra
2018-06-19 20:23 ` Peter Zijlstra
2018-06-19 21:48 ` Josh Triplett
2018-06-19 21:48 ` Josh Triplett
2018-06-19 21:48 ` Josh Triplett
2018-06-19 21:48 ` Josh Triplett
2018-12-09 20:06 ` Pavel Machek
2018-12-09 20:06 ` Pavel Machek
2018-12-09 20:06 ` Pavel Machek
2018-12-09 20:06 ` Pavel Machek
2018-12-10 7:47 ` Josh Triplett
2018-12-10 7:47 ` Josh Triplett
2018-12-10 7:47 ` Josh Triplett
2018-12-10 7:47 ` Josh Triplett
2018-12-10 8:27 ` Pavel Machek
2018-12-10 8:27 ` Pavel Machek
2018-12-10 8:27 ` Pavel Machek
2018-12-10 8:27 ` Pavel Machek
2018-12-10 23:12 ` Josh Triplett
2018-12-10 23:12 ` Josh Triplett
2018-12-10 23:12 ` Josh Triplett
2018-12-10 23:12 ` Josh Triplett
2018-12-11 18:10 ` Dave Hansen
2018-12-11 18:10 ` Dave Hansen
2018-12-11 18:10 ` Dave Hansen
2018-12-11 18:10 ` Dave Hansen
2018-12-11 18:31 ` Sean Christopherson
2018-12-11 18:31 ` Sean Christopherson
2018-12-11 18:31 ` Sean Christopherson
2018-12-11 18:31 ` Sean Christopherson
2018-06-19 20:36 ` Peter Zijlstra
2018-06-19 20:36 ` Peter Zijlstra
2018-06-19 20:36 ` Peter Zijlstra
2018-06-19 20:36 ` Peter Zijlstra
2018-06-21 12:55 ` Ingo Molnar
2018-06-21 12:55 ` Ingo Molnar
2018-06-21 12:55 ` Ingo Molnar
2018-06-25 9:44 ` Jarkko Sakkinen
2018-06-25 9:44 ` Jarkko Sakkinen
2018-06-25 9:44 ` Jarkko Sakkinen
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