linux-kernel - RE: [PATCH v3 1/2] x86: Add support for the pcommit instruction

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <94D0CD8314A33A4D9D801C0FE68B40295A75C517@G9W0745.americas.hpqcorp.net>
Date:	Wed, 28 Jan 2015 17:10:46 +0000
From:	"Elliott, Robert (Server Storage)" <Elliott@...com>
To:	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	H Peter Anvin <h.peter.anvin@...el.com>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...en8.de>,
	"Kani, Toshimitsu" <toshi.kani@...com>,
	"Knippers, Linda" <linda.knippers@...com>
Subject: RE: [PATCH v3 1/2] x86: Add support for the pcommit instruction



> -----Original Message-----
> From: linux-kernel-owner@...r.kernel.org [mailto:linux-kernel-
> owner@...r.kernel.org] On Behalf Of Ross Zwisler
> Sent: Tuesday, 27 January, 2015 10:54 AM
> To: linux-kernel@...r.kernel.org
> Cc: Ross Zwisler; H Peter Anvin; Ingo Molnar; Thomas Gleixner; Borislav
> Petkov
> Subject: [PATCH v3 1/2] x86: Add support for the pcommit instruction
> 
> Add support for the new pcommit (persistent commit) instruction.  This
> instruction was announced in the document "Intel Architecture
> Instruction Set Extensions Programming Reference" with reference number
> 319433-022.
> 
> https://software.intel.com/sites/default/files/managed/0d/53/319433-
> 022.pdf
> 
...
> ---
>  arch/x86/include/asm/cpufeature.h    | 1 +
>  arch/x86/include/asm/special_insns.h | 8 ++++++++
>  2 files changed, 9 insertions(+)

Should this patch series also add defines for the virtual 
machine control data structure changes?

1. Add the new VM-Execution Controls bit 21 as
    SECONDARY_EXEC_PCOMMIT_EXITING 0x00200000
to arch/x86/include/asm/vmx.h.

2. Add the new exit reason of 64 (0x41) as
	EXIT_REASON_PCOMMIT  64
to arch/x86/include/uapi/asm/vmx.h and (with a
VMX_EXIT_REASONS string) to usr/include/asm/vmx.h.

3. Add a kvm_vmx_exit_handler to arch/x86/kvm/vmx.c.


---
Rob Elliott    HP Server Storage


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/