[V5,00/15] entry, x86, kvm: Generic entry/exit functionality for host and guest

Message ID	20200722215954.464281930@linutronix.de (mailing list archive)
Headers	show Return-Path: <SRS0=byMP=BB=vger.kernel.org=kvm-owner@kernel.org> Message-Id: <20200722215954.464281930@linutronix.de> Date: Wed, 22 Jul 2020 23:59:54 +0200 From: Thomas Gleixner <tglx@linutronix.de> To: LKML <linux-kernel@vger.kernel.org> Cc: x86@kernel.org, linux-arch@vger.kernel.org, Will Deacon <will@kernel.org>, Arnd Bergmann <arnd@arndb.de>, Mark Rutland <mark.rutland@arm.com>, Kees Cook <keescook@chromium.org>, Keno Fischer <keno@juliacomputing.com>, Paolo Bonzini <pbonzini@redhat.com>, kvm@vger.kernel.org, Gabriel Krisman Bertazi <krisman@collabora.com>, Sean Christopherson <sean.j.christopherson@intel.com> Subject: [patch V5 00/15] entry, x86, kvm: Generic entry/exit functionality for host and guest Content-transfer-encoding: 8-bit Sender: kvm-owner@vger.kernel.org Precedence: bulk
Series	entry, x86, kvm: Generic entry/exit functionality for host and guest \| expand [V5,00/15] entry, x86, kvm: Generic entry/exit functionality for host and guest [V5,01/15] seccomp: Provide stub for __secure_computing() [V5,02/15] entry: Provide generic syscall entry functionality [V5,03/15] entry: Provide generic syscall exit function [V5,04/15] entry: Provide generic interrupt entry/exit code [V5,05/15] entry: Provide infrastructure for work before transitioning to guest mode [V5,06/15] x86/entry: Consolidate check_user_regs() [V5,07/15] x86/entry: Consolidate 32/64 bit syscall entry [V5,08/15] x86/entry: Move user return notifier out of loop [V5,09/15] x86/ptrace: Provide pt_regs helper for entry/exit [V5,10/15] x86/entry: Use generic syscall entry function [V5,11/15] x86/entry: Use generic syscall exit functionality [V5,12/15] x86/entry: Cleanup idtentry_entry/exit_user [V5,13/15] x86/entry: Use generic interrupt entry/exit code [V5,14/15] x86/entry: Cleanup idtentry_enter/exit [V5,15/15] x86/kvm: Use generic xfer to guest work function

Message ID

20200722215954.464281930@linutronix.de (mailing list archive)

Headers

Message-Id: <20200722215954.464281930@linutronix.de>
Date: Wed, 22 Jul 2020 23:59:54 +0200
From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, linux-arch@vger.kernel.org,
        Will Deacon <will@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
        Mark Rutland <mark.rutland@arm.com>,
        Kees Cook <keescook@chromium.org>,
        Keno Fischer <keno@juliacomputing.com>,
        Paolo Bonzini <pbonzini@redhat.com>, kvm@vger.kernel.org,
        Gabriel Krisman Bertazi <krisman@collabora.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>
Subject: [patch V5 00/15] entry, x86, kvm: Generic entry/exit functionality
 for host and guest
Content-transfer-encoding: 8-bit
Sender: kvm-owner@vger.kernel.org
Precedence: bulk

Series

entry, x86, kvm: Generic entry/exit functionality for host and guest | expand

Message

Thomas Gleixner July 22, 2020, 9:59 p.m. UTC

This is the 5th version of generic entry/exit functionality for host and
guest.

The 4th version is available here:

    https://lore.kernel.org/r/20200721105706.030914876@linutronix.de

Changes vs. V4:

  - Add the missing instrumentation prevetions to the entry Makefile (Kees)
  - Rename exit_to_guest to xfer_to_guest (Sean)

The patches depend on:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/entry

The lot is also available from git:

    git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/entry

Thanks,

	tglx

Comments

Thomas Gleixner July 24, 2020, 8:51 p.m. UTC | #1

Thomas Gleixner <tglx@linutronix.de> writes:
> This is the 5th version of generic entry/exit functionality for host and
> guest.

I've merged the pile in two steps. Patch 1-5, i.e. the generic code is
here:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core/entry

and merged this branch and patch 6-15 into

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/entry

core/entry is immutable and any updates, changes go on top. It's meant
as a base for other architecture developers who want to fiddle with that
without having to get the x86 mess as well.

Thanks for all the help!

       tglx

Steven Price July 29, 2020, 1:39 p.m. UTC | #2

On 24/07/2020 21:51, Thomas Gleixner wrote:
> Thomas Gleixner <tglx@linutronix.de> writes:
>> This is the 5th version of generic entry/exit functionality for host and
>> guest.
> 
> I've merged the pile in two steps. Patch 1-5, i.e. the generic code is
> here:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core/entry
> 
> and merged this branch and patch 6-15 into
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/entry
> 
> core/entry is immutable and any updates, changes go on top. It's meant
> as a base for other architecture developers who want to fiddle with that
> without having to get the x86 mess as well.

Hi Thomas,

Just FYI: I'm going to take a look at arm64 support for this. I know 
Mark previously posted[1] a series moving much of the code to C, so 
hopefully I can build on that and make use of the generic code.

Thanks,

Steve

[1] https://lore.kernel.org/r/20200108185634.1163-1-mark.rutland@arm.com