[PATCH] paravirt: header and stubs for paravirtualisation
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.
This patch does the dumbest possible replacement of paravirtualized
instructions: calls through a "paravirt_ops" structure. Currently these are
function implementations of native hardware: hypervisors will override the ops
structure with their own variants.
All the pv-ops functions are declared "fastcall" so that a specific
register-based ABI is used, to make inlining assember easier.
And:
+From: Andy Whitcroft <apw@shadowen.org>
The paravirt ops introduce a 'weak' attribute onto memory_setup().
Code ordering leads to the following warnings on x86:
arch/i386/kernel/setup.c:651: warning: weak declaration of
`memory_setup' after first use results in unspecified behavior
Move memory_setup() to avoid this.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index 78af572..c505b16 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -56,6 +56,7 @@
#include <asm/uaccess.h>
#include <asm/processor.h>
#include <asm/timer.h>
+#include <asm/time.h>
#include "mach_time.h"
@@ -116,10 +117,7 @@
/* gets recalled with irq locally disabled */
/* XXX - does irqsave resolve this? -johnstul */
spin_lock_irqsave(&rtc_lock, flags);
- if (efi_enabled)
- retval = efi_set_rtc_mmss(nowtime);
- else
- retval = mach_set_rtc_mmss(nowtime);
+ retval = set_wallclock(nowtime);
spin_unlock_irqrestore(&rtc_lock, flags);
return retval;
@@ -223,10 +221,7 @@
spin_lock_irqsave(&rtc_lock, flags);
- if (efi_enabled)
- retval = efi_get_time();
- else
- retval = mach_get_cmos_time();
+ retval = get_wallclock();
spin_unlock_irqrestore(&rtc_lock, flags);
@@ -370,7 +365,7 @@
printk("Using HPET for base-timer\n");
}
- time_init_hook();
+ do_time_init();
}
#endif
@@ -392,5 +387,5 @@
do_settimeofday(&ts);
- time_init_hook();
+ do_time_init();
}