linux-kernel - [PATCH] xen: remove XEN_PRIVILEGED

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>] [day] [month] [year] [list]

Message-ID: <1392581262.28866.66.camel@x220>
Date:	Sun, 16 Feb 2014 21:07:42 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	David Vrabel <david.vrabel@...rix.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	Michael Opdenacker <michael.opdenacker@...e-electrons.com>,
	Richard Weinberger <richard@....at>, x86@...nel.org,
	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org
Subject: [PATCH] xen: remove XEN_PRIVILEGED_GUEST

This patch removes the Kconfig symbol XEN_PRIVILEGED_GUEST which is
used nowhere in the tree. We do know grub2 has a script that greps
kernel configuration files for this symbol. It shouldn't do that. As
Linus summarized:
    This is a grub bug. It really is that simple. Treat it as one.

So there's no reason to not remove it, like we do with all unused
Kconfig symbols.

[pebolle@...cali.nl: rewrote commit explanation.]
Signed-off-by: Michael Opdenacker <michael.opdenacker@...e-electrons.com>
Signed-off-by: Paul Bolle <pebolle@...cali.nl>
---
Tested with "git grep".

Michael's version can be found at https://lkml.org/lkml/2013/7/8/34 .
(This is the same patch, with a rewritten explanation, and my S-o-b
line.) The question whether this symbol can be removed was further
discussed in https://lkml.org/lkml/2013/7/15/308 .

I don't think a bug was ever filed against grub2 regarding its way to
check for Xen support. Should that be done first?

 arch/x86/xen/Kconfig | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 01b9026..512219d 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -19,11 +19,6 @@ config XEN_DOM0
 	depends on XEN && PCI_XEN && SWIOTLB_XEN
 	depends on X86_LOCAL_APIC && X86_IO_APIC && ACPI && PCI
 
-# Dummy symbol since people have come to rely on the PRIVILEGED_GUEST
-# name in tools.
-config XEN_PRIVILEGED_GUEST
-	def_bool XEN_DOM0
-
 config XEN_PVHVM
 	def_bool y
 	depends on XEN && PCI && X86_LOCAL_APIC
-- 
1.8.5.3

--
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/