linux-kernel - [PATCH 04 of 11] x86: fix early

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

Message-Id: <de52cce203cd6edeed0d.1201296193@localhost>
Date:	Fri, 25 Jan 2008 13:23:13 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>, Andi Kleen <ak@...e.de>,
	Jan Beulich <jbeulich@...ell.com>,
	Eduardo Pereira Habkost <ehabkost@...hat.com>,
	Ian Campbell <ijc@...lion.org.uk>,
	H Peter Anvin <hpa@...or.com>
Subject: [PATCH 04 of 11] x86: fix early_ioremap pagetable ops

Put appropriate pagetable update hooks in so that paravirt knows
what's going on in there.

Signed-off-by: Jeremy Fitzhardinge <jeremy@...source.com>
---
 arch/x86/mm/ioremap.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -18,6 +18,7 @@
 #include <asm/fixmap.h>
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
+#include <asm/pgalloc.h>
 
 #ifdef CONFIG_X86_64
 
@@ -265,7 +266,7 @@ void __init early_ioremap_init(void)
 
 	pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
 	memset(bm_pte, 0, sizeof(bm_pte));
-	set_pmd(pmd, __pmd(__pa(bm_pte) | _PAGE_TABLE));
+	pmd_populate_kernel(&init_mm, pmd, bm_pte);
 
 	/*
 	 * The boot-ioremap range spans multiple pmds, for which
@@ -295,6 +296,7 @@ void __init early_ioremap_clear(void)
 
 	pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
 	pmd_clear(pmd);
+	paravirt_release_pt(__pa(bm_pte) >> PAGE_SHIFT);
 	__flush_tlb_all();
 }
 


--
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/