linux-kernel - [PATCH v3 0/7] xen: fix dom0 PV boot on some AMD machines

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: <20240910103932.7634-1-jgross@suse.com>
Date: Tue, 10 Sep 2024 12:39:25 +0200
From: Juergen Gross <jgross@...e.com>
To: linux-kernel@...r.kernel.org,
	x86@...nel.org,
	linux-acpi@...r.kernel.org
Cc: Juergen Gross <jgross@...e.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	xen-devel@...ts.xenproject.org,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>
Subject: [PATCH v3 0/7]  xen: fix dom0 PV boot on some AMD machines

There have been reports of failed boots with Xen due to an overlap of
the kernel's memory with ACPI NVS reported in the E820 map of the host.

This series fixes this issue by moving the NVS area in dom0 to some
higher address.

Changes in V2:
- split of v1 patch 5
- new patch 6

Changes in V3:
- addressed comments

Juergen Gross (7):
  xen: use correct end address of kernel for conflict checking
  xen: introduce generic helper checking for memory map conflicts
  xen: move checks for e820 conflicts further up
  xen: move max_pfn in xen_memory_setup() out of function scope
  xen: add capability to remap non-RAM pages to different PFNs
  xen: allow mapping ACPI data using a different physical address
  xen: tolerate ACPI NVS memory overlapping with Xen allocated memory

 arch/x86/include/asm/acpi.h        |   8 ++
 arch/x86/kernel/acpi/boot.c        |  10 ++
 arch/x86/kernel/mmconf-fam10h_64.c |   2 +-
 arch/x86/kernel/x86_init.c         |   2 +-
 arch/x86/xen/mmu_pv.c              |   5 +-
 arch/x86/xen/p2m.c                 |  99 ++++++++++++++
 arch/x86/xen/setup.c               | 202 ++++++++++++++++++++++-------
 arch/x86/xen/xen-ops.h             |   6 +-
 8 files changed, 282 insertions(+), 52 deletions(-)

-- 
2.43.0