[v3,0/7] xen: fix dom0 PV boot on some AMD machines

Message ID	20240910103932.7634-1-jgross@suse.com (mailing list archive)
Headers	show Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 61A3317A589; Tue, 10 Sep 2024 10:39:37 +0000 (UTC) From: Juergen Gross <jgross@suse.com> To: linux-kernel@vger.kernel.org, x86@kernel.org, linux-acpi@vger.kernel.org Cc: Juergen Gross <jgross@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>, Dave Hansen <dave.hansen@linux.intel.com>, "H. Peter Anvin" <hpa@zytor.com>, xen-devel@lists.xenproject.org, "Rafael J. Wysocki" <rafael@kernel.org>, Len Brown <lenb@kernel.org> Subject: [PATCH v3 0/7] xen: fix dom0 PV boot on some AMD machines Date: Tue, 10 Sep 2024 12:39:25 +0200 Message-ID: <20240910103932.7634-1-jgross@suse.com> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit default: False [-5.01 / 50.00]; BAYES_HAM(-3.00)[99.99%]; DWL_DNSWL_MED(-2.00)[suse.com:dkim]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; ARC_NA(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; RCPT_COUNT_TWELVE(0.00)[13]; FUZZY_BLOCKED(0.00)[rspamd.com]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.com:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_SOME(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:dkim,suse.com:mid,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns]
Series	xen: fix dom0 PV boot on some AMD machines \| expand [v3,0/7] xen: fix dom0 PV boot on some AMD machines [v3,6/7] xen: allow mapping ACPI data using a different physical address

Message ID

20240910103932.7634-1-jgross@suse.com (mailing list archive)

Headers

From: Juergen Gross <jgross@suse.com>
To: linux-kernel@vger.kernel.org,
	x86@kernel.org,
	linux-acpi@vger.kernel.org
Cc: Juergen Gross <jgross@suse.com>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	xen-devel@lists.xenproject.org,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	Len Brown <lenb@kernel.org>
Subject: [PATCH v3 0/7]  xen: fix dom0 PV boot on some AMD machines
Date: Tue, 10 Sep 2024 12:39:25 +0200
Message-ID: <20240910103932.7634-1-jgross@suse.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Series

xen: fix dom0 PV boot on some AMD machines | expand

Message

Jürgen Groß Sept. 10, 2024, 10:39 a.m. UTC

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(-)