linux-kernel - [PATCH 5/5] X86/XEN: Add few lines explaining simple semantic for x86_init.paging.pagetable

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Date:	Tue, 21 Aug 2012 02:14:06 +0100
From:	Attilio Rao <attilio.rao@...rix.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	Stefano Stabellini <Stefano.Stabellini@...citrix.com>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	<linux-kernel@...r.kernel.org>, <x86@...nel.org>,
	<xen-devel@...ts.xensource.com>
CC:	Attilio Rao <attilio.rao@...rix.com>
Subject: [PATCH 5/5] X86/XEN: Add few lines explaining simple semantic for x86_init.paging.pagetable_init PVOPS

- Explain the purpose of the PVOPS
- Report execution constraints

Signed-off-by: Attilio Rao <attilio.rao@...rix.com>
---
 arch/x86/include/asm/x86_init.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 995ea5c..7ea4186 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -82,6 +82,11 @@ struct x86_init_mapping {
 /**
  * struct x86_init_paging - platform specific paging functions
  * @pagetable_init:		platform specific paging initialization call
+ *
+ * It does setup the kernel pagetables and prepares accessors functions to
+ * manipulate them.
+ * It must be called once, during the boot sequence and after the direct
+ * mapping for phys memory is setup.
  */
 struct x86_init_paging {
 	void (*pagetable_init)(void);
-- 
1.7.2.5

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