linux-kernel - Re: [PATCH 1/7] paravirtualization: header and stubs for paravirtualizing critical operations

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Message-Id: <200611030356.54074.ak@suse.de>
Date:	Fri, 3 Nov 2006 03:56:53 +0100
From:	Andi Kleen <ak@...e.de>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	virtualization@...ts.osdl.org, Chris Wright <chrisw@...s-sol.org>,
	akpm@...l.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] paravirtualization: header and stubs for paravirtualizing critical operations

On Wednesday 01 November 2006 11:27, Rusty Russell wrote:
> Create a paravirt.h header for all the critical operations which need
> to be replaced with hypervisor calls, and include that instead of
> defining native operations, when CONFIG_PARAVIRT.

Hmm, did this all ever compile in mainline? I had to do a few merges
and in the end i get

/home/lsrc/quilt/linux/kernel/spinlock.c: In function ‘_spin_lock_irqsave’:
include2/asm/spinlock.h:59: error: invalid 'asm': operand number missing after %
-letter
include2/asm/spinlock.h:59: error: invalid 'asm': operand number missing after %
-letter
include2/asm/spinlock.h:59: error: invalid 'asm': operand number missing after %
-letter
include2/asm/spinlock.h:59: error: invalid 'asm': operand number missing after %
-letter
include2/asm/spinlock.h:59: error: invalid 'asm': operand number missing after %
-letter
include2/asm/spinlock.h:59: error: invalid 'asm': operand number missing after %
-letter
include2/asm/spinlock.h:59: error: invalid 'asm': operand number missing after %
-letter
include2/asm/spinlock.h:59: error: invalid 'asm': operand number missing after %
-letter
{standard input}: Assembler messages:
{standard input}:593: Error: undefined symbol `paravirt_ops' in operation
{standard input}:593: Error: undefined symbol `PARAVIRT_irq_enable' in operation
{standard input}:605: Error: undefined symbol `paravirt_ops' in operation
{standard input}:605: Error: undefined symbol `PARAVIRT_irq_disable' in operatio
n

and lots of new warnings like

/home/lsrc/quilt/linux/arch/i386/kernel/traps.c: In function ‘set_intr_gate’:
/home/lsrc/quilt/linux/arch/i386/kernel/traps.c:1165: warning: implicit declarat
ion of function ‘_set_gate’
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/common.c: In function ‘_cpu_init’:
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/common.c:754: warning: implicit decl
aration of function ‘__set_tss_desc’
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c: In function ‘intel_mach
ine_check’:
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.eax’ 
may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.ebx’ 
may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.ecx’ 
may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.edx’ 
may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.esi’ 
may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.edi’ 
may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.ebp’ 
may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.esp’ 
may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.eflag
s’ may be used uninitialized in this function
/home/lsrc/quilt/linux/arch/i386/kernel/cpu/mcheck/p4.c:158: warning: ‘dbg.eip’ 
may be used uninitialized in this function


This is with i386 defconfig + CONFIG_PARAVIRT

-Andi

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