RE: Xen on ES7000 x86_64 take 2

[Jerone Young <jyoung5@us.ibm.com>]

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I sent a patch on the list last week that removes the use of the NX bit
from Xen. Could you try it out. I've attached it to this email.


On Fri, 2005-07-15 at 13:59 -0400, Puthiyaparambil, Aravindh wrote:
> As of now there is no BIOS option to enable it. :-(
> 
> > -----Original Message-----
> > From: Nakajima, Jun [mailto:jun.nakajima@intel.com]
> > Sent: Friday, July 15, 2005 1:52 PM
> > To: Puthiyaparambil, Aravindh; xen-devel@lists.xensource.com
> > Cc: Magolan, John F; Subrahmanian, Raj; Davis, Jason; Vessey, Bruce A
> > Subject: RE: [Xen-devel] Xen on ES7000 x86_64 take 2
> > 
> > Puthiyaparambil, Aravindh wrote:
> > > I am still trying to bring Xen up on the ES7000 x86_64. I have a
> > > feeling that the NX/XD is disabled on the system and it is tripping
> > > things up.
> > >
> > > Jun, could you please confirm this? Here is the output you had asked
> > > from me sometime ago. The complete boot output is included below.
> > >
> > > (XEN) CPU: After generic identify, caps: bfebfbff 20000800 00000000
> > > 00000000 00004595 00000000 00000000
> > 
> > Yes, it's disabled. 20000800 should become 20100800. Is there any BIOS
> > setup to enable it?
> > 
> > Jun
> > ---
> > Intel Open Source Technology Center
> > 
> > >
> > > Thanks
> > > Aravindh
> > >
> > >
> >
> ------------------------------------------------------------------------
> > >
> > >> -----Original Message-----
> > >> From: Nakajima, Jun [mailto:jun.nakajima@intel.com]
> > >> Sent: Saturday, July 02, 2005 2:11 AM
> > >> To: Puthiyaparambil, Aravindh; xen-devel@lists.xensource.com
> > >> Cc: Magolan, John F; Subrahmanian, Raj; Davis, Jason; Vessey, Bruce
> A
> > >> Subject: RE: [Xen-devel] Xen on ES7000 x86_64
> > >>
> > >> Puthiyaparambil, Aravindh wrote:
> > >>> I am trying to bring Xen up on the ES7000 x86_64 box. I have some
> of
> > >>> my patches along with Don Fry's per-cpu-timer patch. I have
> included
> > >>> the debug output. I am wondering if this is similar to Bug#75 or
> if
> > >>> it is a different problem altogether.
> > >>
> > >> Is it possbile NX/XD is disabled? Can you try
> > >> #define NOISY_CAPS 1
> > >> in xen/arch/x86/cpu/common.c and report the line like:
> > >>
> > >> (XEN) CPU: After generic identify, caps: bfebfbff 20100800 00000000
> > >> 00000000 000 065bd 00000000 00000001
> > >>
> > >> Jun
> > >> ---
> > >> Intel Open Source Technology Center
> > 
> > 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
> 
-- 
Jerone Young
IBM Linux Technology Center
jyoung5@us.ibm.com
512-838-1157 (T/L: 678-1157)

[-- Attachment #2: rm_nx_patch.diff --]
[-- Type: text/x-patch, Size: 2011 bytes --]

--- linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pgtable.h.old	2005-07-08 00:04:22.000000000 -0500
+++ linux-2.6.11-xen-sparse/include/asm-xen/asm-x86_64/pgtable.h	2005-07-08 00:05:23.000000000 -0500
@@ -191,21 +191,21 @@ static inline pte_t ptep_get_and_clear(p
 #define _PAGE_CHG_MASK	(PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
 
 #define PAGE_NONE	__pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
-#define PAGE_SHARED	__pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
+#define PAGE_SHARED	__pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
 #define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
+#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
 #define PAGE_COPY PAGE_COPY_NOEXEC
 #define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
-#define PAGE_READONLY	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
+#define PAGE_READONLY	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
 #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
 #define __PAGE_KERNEL \
-	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX | _PAGE_USER )
+	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_USER )
 #define __PAGE_KERNEL_EXEC \
 	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_USER )
 #define __PAGE_KERNEL_NOCACHE \
-	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_PCD | _PAGE_ACCESSED | _PAGE_NX | _PAGE_USER )
+	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_PCD | _PAGE_ACCESSED | _PAGE_USER )
 #define __PAGE_KERNEL_RO \
-	(_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX | _PAGE_USER )
+	(_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_USER )
 #define __PAGE_KERNEL_VSYSCALL \
 	(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_USER )
 #define __PAGE_KERNEL_VSYSCALL_NOCACHE \

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