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From: Dan Williams <dan.j.williams@intel.com>
To: Kuppuswamy Sathyanarayanan  <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Andy Lutomirski <luto@kernel.org>,
	Dave Hansen <dave.hansen@intel.com>,
	Tony Luck <tony.luck@intel.com>, Andi Kleen <ak@linux.intel.com>,
	Kirill Shutemov <kirill.shutemov@linux.intel.com>,
	Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
	Raj Ashok <ashok.raj@intel.com>,
	Sean Christopherson <seanjc@google.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC v2-fix-v4 1/1] x86/tdx: Skip WBINVD instruction for TDX guest
Date: Tue, 8 Jun 2021 20:40:42 -0700	[thread overview]
Message-ID: <CAPcyv4gLeKPfYOx1kmg-mO1_mNd+XGqVO-CbqX+2d52GZ+DSFw@mail.gmail.com> (raw)
In-Reply-To: <20210609011030.751451-1-sathyanarayanan.kuppuswamy@linux.intel.com>

On Tue, Jun 8, 2021 at 6:10 PM Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com> wrote:
>
> Current TDX spec does not have support to emulate the WBINVD
> instruction. If any feature that uses WBINVD is enabled/used
> in TDX guest, it will lead to un-handled #VE exception, which
> will be handled as #GP fault.
>
> ACPI drivers also uses WBINVD instruction for cache flushes in
> reboot or shutdown code path. Since TDX guest has requirement
> to support shutdown feature, skip WBINVD instruction usage
> in ACPI drivers for TDX guest.

This sounds awkward...

> Since cache is always coherent in TDX guests, making wbinvd as

This is incorrect, ACPI cache flushing is not about I/O or CPU coherency...

> noop should not cause any issues in above mentioned code path.

..."should" is a famous last word...

> The end-behavior is the same as KVM guest (treat as noops).

..."KVM gets away with it" is not a justification that TDX can stand
on otherwise we would not be here fixing up ACPICA properly.

How about:

"TDX guests use standard ACPI mechanisms to signal sleep state entry
(including reboot) to the host. The ACPI specification mandates WBINVD
on any sleep state entry with the expectation that the platform is
only responsible for maintaining the state of memory over sleep
states, not preserving dirty data in any CPU caches. ACPI cache
flushing requirements pre-date the advent of virtualization. Given TDX
guest sleep state entry does not affect any host power rails it is not
required to flush caches. The host is responsible for maintaining
cache state over its own bare metal sleep state transitions that
power-off the cache. If the host fails to manage caches over its sleep
state transitions the guest..."

I don't know how to finish the last sentence. What does TDX do if it
is resumed after host suspend and the host somehow arranged for dirty
TDX lines to be lost. Will that be noticed by TDX integrity
mechanisms? I did not immediately find an answer to this with a brief
look at the specs.

>
> In future, once TDX guest specification adds support for WBINVD
> hypercall, we can pass the handle to KVM to handle it.

I expect if the specification wanted operating systems to plan for
this eventuality it would have made a note of it. I expect this
sentence can just be deleted.

  reply	other threads:[~2021-06-09  3:41 UTC|newest]

Thread overview: 381+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-26 18:01 [RFC v2 00/32] Add TDX Guest Support Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 01/32] x86/paravirt: Introduce CONFIG_PARAVIRT_XL Kuppuswamy Sathyanarayanan
2021-04-27 17:31   ` Borislav Petkov
2021-05-06 14:59     ` Kirill A. Shutemov
2021-05-10  8:07     ` Juergen Gross
2021-05-10 15:52       ` Andi Kleen
2021-05-10 15:56         ` Juergen Gross
2021-05-12 12:07           ` Kirill A. Shutemov
2021-05-12 13:18           ` Peter Zijlstra
2021-05-12 13:24             ` Andi Kleen
2021-05-12 13:51               ` Juergen Gross
2021-05-17 23:50                 ` [RFC v2-fix 1/1] x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 02/32] x86/tdx: Introduce INTEL_TDX_GUEST config option Kuppuswamy Sathyanarayanan
2021-04-26 21:09   ` Randy Dunlap
2021-04-26 22:32     ` Kuppuswamy, Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 03/32] x86/cpufeatures: Add TDX Guest CPU feature Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 04/32] x86/x86: Add is_tdx_guest() interface Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 05/32] x86/tdx: Add __tdcall() and __tdvmcall() helper functions Kuppuswamy Sathyanarayanan
2021-04-26 20:32   ` Dave Hansen
2021-04-26 22:31     ` Kuppuswamy, Sathyanarayanan
2021-04-26 23:17       ` Dave Hansen
2021-04-27  2:29         ` Kuppuswamy, Sathyanarayanan
2021-04-27 14:29           ` Dave Hansen
2021-04-27 19:18             ` Kuppuswamy, Sathyanarayanan
2021-04-27 19:20               ` Dave Hansen
2021-04-28 17:42                 ` [PATCH v1 1/1] x86/tdx: Add __tdx_module_call() and __tdx_hypercall() " Kuppuswamy Sathyanarayanan
2021-05-19  5:58                 ` [RFC v2-fix-v1 " Kuppuswamy Sathyanarayanan
2021-05-19  6:04                   ` Kuppuswamy, Sathyanarayanan
2021-05-19 15:31                   ` Dave Hansen
2021-05-19 19:09                     ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-19 19:13                     ` [RFC v2-fix-v1 " Kuppuswamy, Sathyanarayanan
2021-05-19 20:09                       ` Sean Christopherson
2021-05-19 20:49                         ` Andi Kleen
2021-05-27  0:30                           ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-27 15:25                             ` Luck, Tony
2021-05-27 15:52                               ` Kuppuswamy, Sathyanarayanan
2021-05-27 16:25                                 ` Luck, Tony
2021-04-26 18:01 ` [RFC v2 06/32] x86/tdx: Get TD execution environment information via TDINFO Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 07/32] x86/traps: Add do_general_protection() helper function Kuppuswamy Sathyanarayanan
2021-05-07 21:20   ` Dave Hansen
2021-04-26 18:01 ` [RFC v2 08/32] x86/traps: Add #VE support for TDX guest Kuppuswamy Sathyanarayanan
2021-05-07 21:36   ` Dave Hansen
2021-05-13 19:47     ` Andi Kleen
2021-05-13 20:07       ` Dave Hansen
2021-05-13 22:43         ` Andi Kleen
2021-05-13 20:14       ` Dave Hansen
2021-05-18  0:09     ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 15:11       ` Dave Hansen
2021-05-18 15:45         ` Andi Kleen
2021-05-18 15:56           ` Dave Hansen
2021-05-18 16:00             ` Andi Kleen
2021-05-21 19:22           ` Dan Williams
2021-05-24 14:02             ` Andi Kleen
2021-05-27  0:29               ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-27 15:11                 ` Luck, Tony
2021-05-27 16:24                   ` Sean Christopherson
2021-05-27 16:36                     ` Dave Hansen
2021-05-21 18:45       ` [RFC v2-fix " Kuppuswamy, Sathyanarayanan
2021-05-21 19:15         ` Dave Hansen
2021-05-21 19:57           ` Kuppuswamy, Sathyanarayanan
2021-06-08 17:02   ` [RFC v2 08/32] " Dave Hansen
2021-06-08 17:48     ` Sean Christopherson
2021-06-08 17:53       ` Dave Hansen
2021-06-08 18:12         ` Andi Kleen
2021-06-08 18:15           ` Dave Hansen
2021-06-08 18:17             ` Andy Lutomirski
2021-06-08 18:18             ` Andi Kleen
2021-04-26 18:01 ` [RFC v2 09/32] x86/tdx: Add HLT " Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 10/32] x86/tdx: Wire up KVM hypercalls Kuppuswamy Sathyanarayanan
2021-05-07 21:46   ` Dave Hansen
2021-05-08  0:59     ` Kuppuswamy, Sathyanarayanan
2021-05-12 13:00       ` Kirill A. Shutemov
2021-05-12 14:10         ` Kuppuswamy, Sathyanarayanan
2021-05-12 14:29           ` Dave Hansen
2021-05-13 19:29             ` Kuppuswamy, Sathyanarayanan
2021-05-13 19:33               ` Dave Hansen
2021-05-18  0:15                 ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 15:51                   ` Dave Hansen
2021-05-18 16:23                     ` Sean Christopherson
2021-05-18 20:12                     ` Kuppuswamy, Sathyanarayanan
2021-05-18 20:19                       ` Dave Hansen
2021-05-18 20:57                         ` Kuppuswamy, Sathyanarayanan
2021-05-18 21:19                         ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-18 23:29                           ` Dave Hansen
2021-05-19  1:17                             ` [RFC v2-fix-v3 " Kuppuswamy Sathyanarayanan
2021-05-19  1:20                               ` Sathyanarayanan Kuppuswamy Natarajan
2021-04-26 18:01 ` [RFC v2 11/32] x86/tdx: Add MSR support for TDX guest Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 12/32] x86/tdx: Handle CPUID via #VE Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 13/32] x86/io: Allow to override inX() and outX() implementation Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 14/32] x86/tdx: Handle port I/O Kuppuswamy Sathyanarayanan
2021-05-10 21:57   ` Dan Williams
2021-05-10 23:08     ` Andi Kleen
2021-05-10 23:34       ` Dan Williams
2021-05-11  0:01         ` Andi Kleen
2021-05-11  0:21           ` Dan Williams
2021-05-11  0:30         ` Kuppuswamy, Sathyanarayanan
2021-05-11  1:07           ` Dan Williams
2021-05-11  2:29             ` Kuppuswamy, Sathyanarayanan
2021-05-11 14:39               ` Dave Hansen
2021-05-11 15:08                 ` Kuppuswamy, Sathyanarayanan
2021-05-11  0:56         ` Kuppuswamy, Sathyanarayanan
2021-05-11  2:19           ` Andi Kleen
2021-05-11 15:35     ` Dave Hansen
2021-05-11 15:43       ` Dan Williams
2021-05-12  6:17       ` Dan Williams
2021-05-27  4:23         ` [RFC v2-fix-v1 0/3] " Kuppuswamy Sathyanarayanan
2021-05-27  4:23           ` [RFC v2-fix-v1 1/3] tdx: Introduce generic protected_guest abstraction Kuppuswamy Sathyanarayanan
2021-06-01 21:14             ` [RFC v2-fix-v2 1/1] x86: Introduce generic protected guest abstraction Kuppuswamy Sathyanarayanan
2021-06-02 17:20               ` Sean Christopherson
2021-06-02 18:15                 ` Tom Lendacky
2021-06-02 18:25                   ` Kuppuswamy, Sathyanarayanan
2021-06-02 18:29                   ` Borislav Petkov
2021-06-02 18:32                     ` Kuppuswamy, Sathyanarayanan
2021-06-02 18:39                       ` Borislav Petkov
2021-06-02 18:45                         ` Kuppuswamy, Sathyanarayanan
2021-06-02 18:19               ` Tom Lendacky
2021-06-02 18:29                 ` Kuppuswamy, Sathyanarayanan
2021-06-02 18:30                 ` Borislav Petkov
2021-06-03 18:14               ` Borislav Petkov
2021-06-03 18:15                 ` [RFC v2-fix-v2 1/1] x86: Introduce generic protected guest abstractionn Borislav Petkov
2021-06-04 22:01                   ` Tom Lendacky
2021-06-04 22:13                     ` Kuppuswamy, Sathyanarayanan
2021-06-04 22:15                     ` Borislav Petkov
2021-06-04 23:31                       ` Tom Lendacky
2021-06-05 11:03                         ` Borislav Petkov
2021-06-05 18:12                           ` Kuppuswamy, Sathyanarayanan
2021-06-05 20:08                             ` Borislav Petkov
2021-06-07 19:55                   ` Kirill A. Shutemov
2021-06-07 20:14                     ` Borislav Petkov
2021-06-07 22:26                       ` Kuppuswamy, Sathyanarayanan
2021-06-08 21:30                         ` [RFC v2-fix-v3 1/1] x86: Introduce generic protected guest abstraction Kuppuswamy Sathyanarayanan
2021-06-03 18:33                 ` [RFC v2-fix-v2 " Kuppuswamy, Sathyanarayanan
2021-06-03 18:41                   ` Borislav Petkov
2021-06-03 18:54                     ` Kuppuswamy, Sathyanarayanan
2021-06-07 18:01                 ` Kuppuswamy, Sathyanarayanan
2021-06-07 18:26                   ` Borislav Petkov
2021-06-09 14:01                     ` Kuppuswamy, Sathyanarayanan
2021-06-09 14:32                       ` Borislav Petkov
2021-06-09 14:56                         ` Kuppuswamy, Sathyanarayanan
2021-06-09 15:01                           ` Borislav Petkov
2021-06-09 19:41                             ` [RFC v2-fix-v4 " Kuppuswamy Sathyanarayanan
2021-06-09 22:53                               ` Sathyanarayanan Kuppuswamy Natarajan
2021-05-27  4:23           ` [RFC v2-fix-v1 2/3] x86/tdx: Handle early IO operations Kuppuswamy Sathyanarayanan
2021-06-05  4:26             ` Williams, Dan J
2021-05-27  4:23           ` [RFC v2-fix-v1 3/3] x86/tdx: Handle port I/O Kuppuswamy Sathyanarayanan
2021-06-05 18:52             ` Dan Williams
2021-06-05 20:08               ` Kuppuswamy, Sathyanarayanan
2021-06-05 21:08                 ` Dan Williams
2021-06-07 16:24                   ` Kuppuswamy, Sathyanarayanan
2021-06-07 17:17                     ` Dan Williams
2021-06-07 21:52                       ` Kuppuswamy, Sathyanarayanan
2021-06-07 22:00                         ` Dan Williams
2021-06-08  2:57                           ` Andi Kleen
2021-06-08 15:40                       ` [RFC v2-fix-v2 0/3] " Kuppuswamy Sathyanarayanan
2021-06-08 15:40                         ` [RFC v2-fix-v2 1/3] x86/tdx: Handle port I/O in decompression code Kuppuswamy Sathyanarayanan
2021-06-08 23:12                           ` Dan Williams
2021-06-08 15:40                         ` [RFC v2-fix-v2 2/3] x86/tdx: Handle early IO operations Kuppuswamy Sathyanarayanan
2021-06-08 15:40                         ` [RFC v2-fix-v2 3/3] x86/tdx: Handle port I/O Kuppuswamy Sathyanarayanan
2021-06-08 16:26                           ` Dan Williams
2021-04-26 18:01 ` [RFC v2 15/32] x86/tdx: Handle in-kernel MMIO Kuppuswamy Sathyanarayanan
2021-05-07 21:52   ` Dave Hansen
2021-05-18  0:48     ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 15:00       ` Dave Hansen
2021-05-18 15:56         ` Andi Kleen
2021-05-18 16:04           ` Dave Hansen
2021-05-18 16:10             ` Andi Kleen
2021-05-18 16:22               ` Dave Hansen
2021-05-18 17:05                 ` Andi Kleen
2021-05-18 17:28               ` Andi Kleen
2021-05-18 17:11           ` Sean Christopherson
2021-05-18 17:21             ` Andi Kleen
2021-05-18 17:46               ` Dave Hansen
2021-05-18 18:36                 ` Sean Christopherson
2021-05-18 20:20                 ` Andi Kleen
2021-05-18 20:40                   ` Dave Hansen
2021-05-18 21:05                     ` Andi Kleen
2021-05-18 18:22               ` Sean Christopherson
2021-05-18 20:28                 ` Andi Kleen
2021-05-18 20:37                   ` Sean Christopherson
2021-05-18 20:56                     ` Andi Kleen
2021-05-18 16:18         ` Sean Christopherson
2021-05-18 17:15           ` Andi Kleen
2021-05-18 18:17             ` Sean Christopherson
2021-05-20 22:47               ` Kirill A. Shutemov
2021-06-02 19:42     ` [RFC v2-fix-v2 0/2] " Kuppuswamy Sathyanarayanan
2021-06-02 19:42       ` [RFC v2-fix-v2 1/2] x86/sev-es: Abstract out MMIO instruction decoding Kuppuswamy Sathyanarayanan
2021-06-05 21:56         ` Dan Williams
2021-06-08 15:59           ` [RFC v2-fix-v3 0/4] x86/tdx: Handle in-kernel MMIO Kuppuswamy Sathyanarayanan
2021-06-08 15:59             ` [RFC v2-fix-v3 1/4] x86/insn-eval: Introduce insn_get_modrm_reg_ptr() Kuppuswamy Sathyanarayanan
2021-06-08 15:59             ` [RFC v2-fix-v3 2/4] x86/insn-eval: Introduce insn_decode_mmio() Kuppuswamy Sathyanarayanan
2021-06-08 15:59             ` [RFC v2-fix-v3 3/4] x86/sev-es: Use insn_decode_mmio() for MMIO implementation Kuppuswamy Sathyanarayanan
2021-06-08 15:59             ` [RFC v2-fix-v3 4/4] x86/tdx: Handle in-kernel MMIO Kuppuswamy Sathyanarayanan
2021-06-02 19:42       ` [RFC v2-fix-v2 2/2] " Kuppuswamy Sathyanarayanan
2021-06-02 21:01         ` Andi Kleen
2021-06-02 22:14           ` Kuppuswamy, Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 16/32] x86/tdx: Handle MWAIT, MONITOR and WBINVD Kuppuswamy Sathyanarayanan
2021-05-11  1:23   ` Dan Williams
2021-05-11  2:17     ` Andi Kleen
2021-05-11  2:44       ` Kuppuswamy, Sathyanarayanan
2021-05-11  2:51         ` Andi Kleen
2021-05-11 15:37       ` Dan Williams
2021-05-11 15:42         ` Andi Kleen
2021-05-11 15:44         ` Dave Hansen
2021-05-11 15:50           ` Dan Williams
2021-05-11 15:52             ` Andi Kleen
2021-05-11 16:04               ` Dave Hansen
2021-05-11 17:06                 ` Andi Kleen
2021-05-11 17:42                   ` Dave Hansen
2021-05-11 17:48                     ` Andi Kleen
2021-05-24 23:32                       ` [RFC v2-fix-v2 1/2] x86/tdx: Handle MWAIT and MONITOR Kuppuswamy Sathyanarayanan
2021-05-24 23:32                         ` [RFC v2-fix-v2 2/2] x86/tdx: Ignore WBINVD instruction for TDX guest Kuppuswamy Sathyanarayanan
2021-05-24 23:39                           ` Dan Williams
2021-05-25  0:29                             ` Kuppuswamy, Sathyanarayanan
2021-05-25  0:50                               ` Dan Williams
2021-05-25  0:54                                 ` Sean Christopherson
2021-05-25  1:02                                 ` Andi Kleen
2021-05-25  1:45                                   ` Dan Williams
2021-05-25  2:13                                     ` Andi Kleen
2021-05-25  2:49                                       ` Dan Williams
2021-05-25  3:27                                         ` Andi Kleen
2021-05-25  3:40                                           ` Dan Williams
2021-05-26  1:09                                             ` Andi Kleen
2021-05-27  4:38                                               ` [RFC v2-fix-v3 1/1] " Kuppuswamy Sathyanarayanan
2021-06-05  3:35                                                 ` Dan Williams
2021-06-08 21:35                                                   ` [RFC v2-fix-v3 1/1] x86/tdx: Skip " Kuppuswamy Sathyanarayanan
2021-06-08 21:41                                                     ` Dan Williams
2021-06-08 22:17                                                     ` Dave Hansen
2021-06-08 22:34                                                       ` Andi Kleen
2021-06-08 22:36                                                       ` Kuppuswamy, Sathyanarayanan
2021-06-08 22:53                                                         ` Dave Hansen
2021-06-08 23:04                                                           ` Andi Kleen
2021-06-08 23:04                                                           ` Kuppuswamy, Sathyanarayanan
2021-06-08 23:32                                                     ` Dan Williams
2021-06-08 23:38                                                       ` Dave Hansen
2021-06-09  0:07                                                         ` Dan Williams
2021-06-09  0:14                                                           ` Kuppuswamy, Sathyanarayanan
2021-06-09  1:10                                                           ` [RFC v2-fix-v4 " Kuppuswamy Sathyanarayanan
2021-06-09  3:40                                                             ` Dan Williams [this message]
2021-06-09  3:56                                                               ` Kuppuswamy, Sathyanarayanan
2021-06-09  4:19                                                                 ` Dan Williams
2021-06-09  4:27                                                                   ` Andi Kleen
2021-06-09 15:09                                                                     ` Dan Williams
2021-06-09 16:12                                                                       ` Andy Lutomirski
2021-06-09 17:28                                                                         ` Kuppuswamy, Sathyanarayanan
2021-06-09 17:31                                                                           ` Dan Williams
2021-06-09 18:24                                                                             ` Kuppuswamy, Sathyanarayanan
2021-06-09 19:49                                                                               ` [RFC v2-fix-v5 1/1] x86: Skip WBINVD instruction for VM guest Kuppuswamy Sathyanarayanan
2021-06-09 19:56                                                                                 ` Dan Williams
2021-06-09 21:03                                                                                 ` Dave Hansen
2021-06-09 21:38                                                                                   ` Dan Williams
2021-06-09 21:42                                                                                     ` Kuppuswamy, Sathyanarayanan
2021-06-09 23:55                                                                                       ` Dave Hansen
2021-06-09  4:02                                                               ` [RFC v2-fix-v4 1/1] x86/tdx: Skip WBINVD instruction for TDX guest Andy Lutomirski
2021-06-09  4:21                                                                 ` Dan Williams
2021-06-09  4:25                                                                 ` Andi Kleen
2021-06-09  4:32                                                                   ` Andy Lutomirski
2021-06-09  4:40                                                                     ` Andi Kleen
2021-06-09  4:54                                                                       ` Kuppuswamy, Sathyanarayanan
2021-06-09 14:12                                                             ` Dave Hansen
2021-05-25  4:32                                       ` [RFC v2-fix-v2 2/2] x86/tdx: Ignore " Dave Hansen
2021-05-25  0:36                             ` Andi Kleen
2021-05-24 23:42                           ` Dave Hansen
2021-05-25  0:39                             ` Andi Kleen
2021-05-25  0:53                               ` Dan Williams
2021-05-25  2:26                         ` [RFC v2-fix-v2 1/2] x86/tdx: Handle MWAIT and MONITOR Dan Williams
2021-05-11 14:08     ` [RFC v2 16/32] x86/tdx: Handle MWAIT, MONITOR and WBINVD Dave Hansen
2021-05-11 16:09       ` Sean Christopherson
2021-05-11 16:16         ` Dave Hansen
2021-05-11 15:53   ` Dave Hansen
2021-04-26 18:01 ` [RFC v2 17/32] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Structure Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 18/32] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Mailbox Structure Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 19/32] ACPI/table: Print MADT Wake table information Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 20/32] x86/acpi, x86/boot: Add multiprocessor wake-up support Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 21/32] x86/boot: Add a trampoline for APs booting in 64-bit mode Kuppuswamy Sathyanarayanan
2021-05-13  2:56   ` Dan Williams
2021-05-18  0:54     ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18  2:06       ` Dan Williams
2021-05-18  2:53         ` Kuppuswamy, Sathyanarayanan
2021-05-18  4:08           ` Dan Williams
2021-05-20  0:18             ` Kuppuswamy, Sathyanarayanan
2021-05-20  0:40               ` Dan Williams
2021-05-20  0:42                 ` Kuppuswamy, Sathyanarayanan
2021-05-21 14:39                   ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-21 18:29                     ` Dan Williams
2021-04-26 18:01 ` [RFC v2 22/32] x86/boot: Avoid #VE during compressed boot for TDX platforms Kuppuswamy Sathyanarayanan
2021-05-13  3:03   ` Dan Williams
2021-04-26 18:01 ` [RFC v2 23/32] x86/boot: Avoid unnecessary #VE during boot process Kuppuswamy Sathyanarayanan
2021-05-13  3:23   ` Dan Williams
2021-05-18  0:59     ` [WARNING: UNSCANNABLE EXTRACTION FAILED][WARNING: UNSCANNABLE EXTRACTION FAILED][RFC v2-fix 1/1] x86/boot: Avoid #VE during boot for TDX platforms Kuppuswamy Sathyanarayanan
2021-05-19 16:53       ` [RFC " Dave Hansen
2021-05-21 14:35         ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-21 16:11           ` Dave Hansen
2021-05-21 18:18             ` Sean Christopherson
2021-05-21 18:30               ` Dave Hansen
2021-05-21 18:32                 ` Kuppuswamy, Sathyanarayanan
2021-05-24 23:27                   ` [RFC v2-fix-v3 " Kuppuswamy Sathyanarayanan
2021-05-27 21:25                     ` [RFC v2-fix-v4 " Kuppuswamy Sathyanarayanan
2021-06-08 23:14                       ` Dan Williams
2021-05-21 18:31             ` [RFC v2-fix-v2 " Kuppuswamy, Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 24/32] x86/topology: Disable CPU online/offline control for TDX guest Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 25/32] x86/tdx: Forcefully disable legacy PIC for TDX guests Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 26/32] x86/mm: Move force_dma_unencrypted() to common code Kuppuswamy Sathyanarayanan
2021-05-07 21:54   ` Dave Hansen
2021-05-10 22:19     ` Kuppuswamy, Sathyanarayanan
2021-05-10 22:23       ` Dave Hansen
2021-05-12 13:08         ` Kirill A. Shutemov
2021-05-12 15:44           ` Dave Hansen
2021-05-12 15:53             ` Sean Christopherson
2021-05-13 16:40               ` Kuppuswamy, Sathyanarayanan
2021-05-13 17:49                 ` Dave Hansen
2021-05-13 18:17                   ` Kuppuswamy, Sathyanarayanan
2021-05-13 19:38                   ` Andi Kleen
2021-05-13 19:42                     ` Dave Hansen
2021-05-17 18:16                     ` Sean Christopherson
2021-05-17 18:27                       ` Kuppuswamy, Sathyanarayanan
2021-05-17 18:33                         ` Dave Hansen
2021-05-17 18:37                           ` Sean Christopherson
2021-05-17 22:32                             ` Kuppuswamy, Sathyanarayanan
2021-05-17 23:11                               ` Andi Kleen
2021-05-18  1:28             ` Kuppuswamy, Sathyanarayanan
2021-05-27  4:46               ` Kuppuswamy, Sathyanarayanan
2021-05-27  4:47                 ` [RFC v2-fix-v1 1/1] " Kuppuswamy Sathyanarayanan
2021-06-01  2:10                   ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 27/32] x86/tdx: Exclude Shared bit from __PHYSICAL_MASK Kuppuswamy Sathyanarayanan
2021-05-19  5:00   ` Kuppuswamy, Sathyanarayanan
2021-05-19 16:14   ` Dave Hansen
2021-05-20 18:48     ` Kuppuswamy, Sathyanarayanan
2021-05-20 18:56       ` Kuppuswamy, Sathyanarayanan
2021-05-20 19:33       ` Sean Christopherson
2021-05-20 19:42         ` Kuppuswamy, Sathyanarayanan
2021-05-20 20:16           ` Sean Christopherson
2021-05-20 20:31             ` Andi Kleen
2021-05-20 21:18               ` Sean Christopherson
2021-05-20 21:23                 ` Dave Hansen
2021-05-20 21:28                   ` Kuppuswamy, Sathyanarayanan
2021-05-20 23:25                     ` Andi Kleen
2021-05-20 20:56             ` Dave Hansen
2021-05-31 21:46               ` Kirill A. Shutemov
2021-06-01  2:08                 ` [RFC v2-fix-v1 1/1] x86/tdx: Exclude Shared bit from physical_mask Kuppuswamy Sathyanarayanan
2021-05-20 20:30       ` [RFC v2 27/32] x86/tdx: Exclude Shared bit from __PHYSICAL_MASK Dave Hansen
2021-04-26 18:01 ` [RFC v2 28/32] x86/tdx: Make pages shared in ioremap() Kuppuswamy Sathyanarayanan
2021-05-07 21:55   ` Dave Hansen
2021-05-07 22:38     ` Andi Kleen
2021-05-10 22:23       ` Kuppuswamy, Sathyanarayanan
2021-05-10 22:30         ` Dave Hansen
2021-05-10 22:52           ` Sean Christopherson
2021-05-11  9:35             ` Borislav Petkov
2021-05-20 20:12               ` Kuppuswamy, Sathyanarayanan
2021-05-21 15:18                 ` Borislav Petkov
2021-05-21 16:19                   ` Tom Lendacky
2021-05-21 18:49                     ` Borislav Petkov
2021-05-21 21:14                       ` Tom Lendacky
2021-05-25 18:21                         ` Kuppuswamy, Sathyanarayanan
2021-05-31 15:13                           ` Borislav Petkov
2021-05-31 17:32                             ` Kuppuswamy, Sathyanarayanan
2021-05-31 17:55                               ` Borislav Petkov
2021-05-31 18:45                                 ` Kuppuswamy, Sathyanarayanan
2021-05-31 19:14                                   ` Borislav Petkov
2021-06-01  2:07                                     ` [RFC v2-fix-v1 1/1] " Kuppuswamy Sathyanarayanan
2021-06-01 21:16                                     ` [RFC v2 28/32] " Kuppuswamy, Sathyanarayanan
2021-05-26 21:37                     ` Kuppuswamy, Sathyanarayanan
2021-05-26 22:02                       ` Tom Lendacky
2021-05-26 22:14                         ` Tom Lendacky
2021-05-26 22:20                           ` Kuppuswamy, Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 29/32] x86/tdx: Add helper to do MapGPA TDVMALL Kuppuswamy Sathyanarayanan
2021-05-19 15:59   ` Dave Hansen
2021-05-20 23:14     ` Kuppuswamy, Sathyanarayanan
2021-05-27  4:56       ` [RFC v2-fix-v1 1/1] x86/tdx: Add helper to do MapGPA hypercall Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 30/32] x86/tdx: Make DMA pages shared Kuppuswamy Sathyanarayanan
2021-05-18  1:19   ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 19:55     ` Sean Christopherson
2021-05-18 22:12       ` Kuppuswamy, Sathyanarayanan
2021-05-18 22:31         ` Dave Hansen
2021-06-01  2:06           ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 31/32] x86/kvm: Use bounce buffers for TD guest Kuppuswamy Sathyanarayanan
2021-06-01  2:03   ` [RFC v2-fix-v1 1/1] " Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 32/32] x86/tdx: ioapic: Add shared bit for IOAPIC base address Kuppuswamy Sathyanarayanan
2021-05-07 23:06   ` Dave Hansen
2021-05-24 23:29     ` [RFC v2-fix-v2 1/1] " Kuppuswamy Sathyanarayanan
2021-06-01  1:28       ` [RFC v2-fix-v3 " Kuppuswamy Sathyanarayanan
2021-05-03 23:21 ` [RFC v2 00/32] Add TDX Guest Support Kuppuswamy, Sathyanarayanan

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