linux-kernel - [PATCH] xen: switch to post-init routines in xen mmu.c earlier

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Date:	Wed, 10 Dec 2014 16:56:03 +0100
From:	Juergen Gross <jgross@...e.com>
To:	linux-kernel@...r.kernel.org, xen-devel@...ts.xensource.com,
	konrad.wilk@...cle.com, david.vrabel@...rix.com,
	boris.ostrovsky@...cle.com
Cc:	Juergen Gross <jgross@...e.com>
Subject: [PATCH] xen: switch to post-init routines in xen mmu.c earlier

With the virtual mapped linear p2m list the post-init mmu operations
must be used for setting up the p2m mappings, as in case of
CONFIG_FLATMEM the init routines may trigger BUGs.

Reported-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Signed-off-by: Juergen Gross <jgross@...e.com>
---
 arch/x86/xen/mmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 6ab6150..a1a429a 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1225,6 +1225,7 @@ static void __init xen_pagetable_p2m_setup(void)
 static void __init xen_pagetable_init(void)
 {
 	paging_init();
+	xen_post_allocator_init();
 
 	xen_pagetable_p2m_setup();
 
@@ -1236,7 +1237,6 @@ static void __init xen_pagetable_init(void)
 		xen_remap_memory();
 
 	xen_setup_shared_info();
-	xen_post_allocator_init();
 }
 static void xen_write_cr2(unsigned long cr2)
 {
-- 
2.1.2

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