linux-kernel - [PATCH] fill in missing pv_mmu_ops entries for PAGETABLE

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Date:	Sat, 19 Jan 2008 16:19:09 -0200
From:	Marcelo Tosatti <marcelo@...ck.org>
To:	mingo@...e.hu, gcosta@...hat.com
Cc:	ehabkost@...hat.com, glommer@...il.com, jeremy@...p.org,
	chrisw@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH] fill in missing pv_mmu_ops entries for PAGETABLE_LEVELS >= 3

On Fri, Jan 18, 2008 at 03:20:15PM -0200, Glauber de Oliveira Costa wrote:
> Hi,
> 
> This small series provides some more fixes towards the goal
> to have the PARAVIRT selectable for x86_64. After that, just
> some more small steps are needed.
> 
> The first fix is not even specific for PARAVIRT, and it's actually
> preventing the whole tree from booting.
> 

And the following allows PARAVIRT kernels to boot on x86_64.

-----

Fill in missing pagetable manipulation entries in pv_mmu_ops 
for PAGETABLE_LEVELS >= 3.

Signed-off-by: Marcelo Tosatti <mtosatti@...hat.com>


Index: linux-2.6-x86/arch/x86/kernel/paravirt.c
===================================================================
--- linux-2.6-x86.orig/arch/x86/kernel/paravirt.c
+++ linux-2.6-x86/arch/x86/kernel/paravirt.c
@@ -396,16 +396,25 @@ struct pv_mmu_ops pv_mmu_ops = {
 	.kmap_atomic_pte = kmap_atomic,
 #endif
 
+#if PAGETABLE_LEVELS >= 3
 #ifdef CONFIG_X86_PAE
 	.set_pte_atomic = native_set_pte_atomic,
 	.set_pte_present = native_set_pte_present,
-	.set_pud = native_set_pud,
 	.pte_clear = native_pte_clear,
 	.pmd_clear = native_pmd_clear,
-
+#endif
+	.set_pud = native_set_pud,
+	.set_pgd = native_set_pgd,
+	.pgd_clear = native_pgd_clear,
 	.pmd_val = native_pmd_val,
 	.make_pmd = native_make_pmd,
+
+#if PAGETABLE_LEVELS == 4
+	.pud_val = native_pud_val,
+	.make_pud = native_make_pud,
+	.pud_clear = native_pud_clear,
 #endif
+#endif /* PAGETABLE_LEVELS >= 3 */
 
 	.pte_val = native_pte_val,
 	.pgd_val = native_pgd_val,



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