linux-kernel - [PATCH 0/3] xen: remove some checks for always present Xen features

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-next>] [day] [month] [year] [list]

Message-Id: <20210422151007.2205-1-jgross@suse.com>
Date:   Thu, 22 Apr 2021 17:10:04 +0200
From:   Juergen Gross <jgross@...e.com>
To:     xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        x86@...nel.org
Cc:     Juergen Gross <jgross@...e.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH 0/3] xen: remove some checks for always present Xen features

Some features of Xen can be assumed to be always present, so add a
central check to verify this being true and remove the other checks.

Juergen Gross (3):
  xen: check required Xen features
  xen: assume XENFEAT_mmu_pt_update_preserve_ad being set for pv guests
  xen: assume XENFEAT_gnttab_map_avail_bits being set for pv guests

 arch/x86/xen/enlighten_pv.c | 12 ++----------
 arch/x86/xen/mmu_pv.c       |  4 ++--
 drivers/xen/features.c      | 18 ++++++++++++++++++
 drivers/xen/gntdev.c        | 36 ++----------------------------------
 4 files changed, 24 insertions(+), 46 deletions(-)

-- 
2.26.2