From: Dan Williams <dan.j.williams@intel.com>
To: Andi Kleen <ak@linux.intel.com>
Cc: Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@intel.com>,
Tony Luck <tony.luck@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 14/32] x86/tdx: Handle port I/O
Date: Mon, 10 May 2021 16:34:34 -0700 [thread overview]
Message-ID: <CAPcyv4iuRdXooQvCzEWd9babzPij4nXpM-z5fai9+SGaeFYswQ@mail.gmail.com> (raw)
In-Reply-To: <e8ac31bc-e307-f277-f928-24ebba4cbca7@linux.intel.com>
On Mon, May 10, 2021 at 4:08 PM Andi Kleen <ak@linux.intel.com> wrote:
>
>
> On 5/10/2021 2:57 PM, Dan Williams wrote:
> >
> > There is a mix of direct-TDVMCALL usage and handling #VE when and why
> > is either approached used?
>
> For the really early code in the decompressor or the main kernel we
> can't use #VE because the IDT needed for handling the exception is not
> set up, and some other infrastructure needed by the handler is missing.
> The early code needs to do port IO to be able to write the early serial
> console. To keep it all common it ended up that all port IO is paravirt.
> Actually for most the main kernel port IO calls we could just use #VE
> and it would result in smaller binaries, but then we would need to
> annotate all early portio with some special name. That's why port IO is
> all TDCALL.
Thanks Andi. Sathya, please include the above in the next posting.
>
> For some others the only thing that really has to be #VE is MMIO because
> we don't want to annotate every MMIO read*/write* with an alternative
> (which would result in incredible binary bloat) For the others they have
> mostly become now direct calls.
>
>
> >
> >> Decompression code uses port IO for earlyprintk. We must use
> >> paravirt calls there too if we want to allow earlyprintk.
> > What is the tradeoff between teaching the decompression code to handle
> > #VE (the implied assumption) vs teaching it to avoid #VE with direct
> > TDVMCALLs (the chosen direction)?
>
> The decompression code only really needs it to output something. But you
> couldn't debug anything until #VE is set up. Also the decompression code
> has a very basic environment that doesn't supply most kernel services,
> and the #VE handler is relatively complicated. It would probably need to
> be duplicated and the instruction decoder be ported to work in this
> environment. It would be all a lot of work, just to make the debug
> output work.
>
> >
> >> Co-developed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> >> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> >> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> >> Reviewed-by: Andi Kleen <ak@linux.intel.com>
> >> ---
> >> arch/x86/boot/compressed/Makefile | 1 +
> >> arch/x86/boot/compressed/tdcall.S | 9 ++
> >> arch/x86/include/asm/io.h | 5 +-
> >> arch/x86/include/asm/tdx.h | 46 ++++++++-
> >> arch/x86/kernel/tdcall.S | 154 ++++++++++++++++++++++++++++++
> > Why is this named "tdcall" when it is implementing tdvmcalls? I must
> > say those names don't really help me understand what they do. Can we
> > have Linux names that don't mandate keeping the spec terminology in my
> > brain's translation cache?
>
> The instruction is called TDCALL. It's always the same instruction
>
> TDVMCALL is the variant when the host processes it (as opposed to the
> TDX module), but it's just a different name space in the call number.
>
>
Ok.
> \
>
> > Is there a unified Linux name these can be given to stop the
> > proliferation of poor vendor names for similar concepts?
>
> We could use protected_guest()
Looks good.
>
>
> >
> > Does it also not know how to handle #VE to keep it aligned with the
> > runtime code?
>
>
> Not sure I understand the question, but the decompression code supports
> neither alternatives nor #VE. It's a very limited environment.
Yes, that addresses the question.
>
> >
> > Outside the boot decompression code isn't this branch of the "ifdef
> > BOOT_COMPRESSED_MISC_H" handled by #VE? I also don't see any usage of
> > __{in,out}() in this patch.
>
> I thought it was all alternative after decompression, so the #VE code
> shouldn't be called. We still have it for some reason though.
Right, I'm struggling to understand where these spurious in/out
instructions are coming from that are not replaced by the
alternative's code? Shouldn't those be dropped on the floor and warned
about rather than handled? I.e. shouldn't port-io instruction escapes
that would cause #VE be precluded at build-time?
>
>
> >
> > Perhaps "PAYLOAD_SIZE" since it is used for both input and output?
> >
> > If the ABI does not include the size of the payload then how would
> > code detect if even 80 bytes was violated in the future?
>
>
> The payload in memory is just a Linux concept. At the TDCALL level it's
> only registers.
>
If it's only a Linux concept why does this code need to "prepare for
the future"?
> >
> > 5
> > Surely there's an existing macro for this pattern? Would
> > PUSH_AND_CLEAR_REGS + POP_REGS be suitable? Besides code sharing it
> > would eliminate clearing of %r8.
>
>
> There used to be SAVE_ALL/SAVE_REGS, but they have been all removed in
> some past refactorings.
Not a huge deal, but at a minimum it seems a generic construct that
deserves to be declared centrally rather than tdx-guest-port-io local.
next prev parent reply other threads:[~2021-05-10 23:34 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 [this message]
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
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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