Re: [RFC PATCH 0/15]: PVH xen: Patches for PVH guests

[Mukesh Rathor <mukesh.rathor@oracle.com>]

On Tue, 15 Jan 2013 17:38:33 +0100
Roger Pau Monné <roger.pau@citrix.com> wrote:

> On 14/01/13 23:40, Mukesh Rathor wrote:

Hi Roger,

Ah yes, you need the following patch on your linux side. Please keep
me posted how it goes, and whatever testing/performance stuff you do.

Don't forget CONFIG_XEN_X86_PVH btw :).

Thanks,
Mukesh



From 7a7b03ff160840edf43e7213d14e4a7620874a73 Mon Sep 17 00:00:00 2001
From: Mukesh Rathor <mukesh.rathor@oracle.com>
Date: Wed, 14 Nov 2012 18:16:54 -0800
Subject: [PATCH 13/13] PVH: remove macro FEATURES_PVH and put PVH
strings in the ELFNOTE line, because there's a null char before
FEATURES_PVH and in the FEATURES_PVH strings since this is not C file

Signed-off-by: Mukesh Rathor <mukesh.rathor@oracle.com>
---
 arch/x86/xen/xen-head.S |   14 +++++---------
 1 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index 1a6bca1..340fd4e 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -13,14 +13,6 @@
 #include <xen/interface/elfnote.h>
 #include <asm/xen/interface.h>
 
-#ifdef CONFIG_XEN_X86_PVH
-#define FEATURES_PVH "|writable_descriptor_tables" \
-		     "|auto_translated_physmap" \
-		     "|supervisor_mode_kernel" \
-		     "|hvm_callback_vector"
-#else
-#define FEATURES_PVH /* Not supported */
-#endif
 
 	__INIT
 ENTRY(startup_xen)
@@ -104,7 +96,11 @@ NEXT_HYPERCALL(arch_6)
 #endif
 	ELFNOTE(Xen, XEN_ELFNOTE_ENTRY,          _ASM_PTR startup_xen)
 	ELFNOTE(Xen, XEN_ELFNOTE_HYPERCALL_PAGE, _ASM_PTR
hypercall_page)
-	ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz
"!writable_page_tables|pae_pgdir_above_4gb"FEATURES_PVH) +#ifdef
CONFIG_XEN_X86_PVH
+        ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz
"!writable_page_tables|pae_pgdir_above_4gb|writable_descriptor_tables|auto_translated_physmap|supervisor_mode_kernel|hvm_callback_vector")
+#else
+        ELFNOTE(Xen, XEN_ELFNOTE_FEATURES,       .asciz
"!writable_page_tables|pae_pgdir_above_4gb")+#endif
 	ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE,       .asciz "yes")
 	ELFNOTE(Xen, XEN_ELFNOTE_LOADER,         .asciz "generic")
 	ELFNOTE(Xen, XEN_ELFNOTE_L1_MFN_VALID,
-- 
1.7.2.3


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