ia64/xen-unstable

view xen/include/asm-x86/hardirq.h @ 15812:86a154e1ef5d

[HVM] Shadow: don't shadow the p2m table.
For HVM vcpus with paging disabled, we used to shadow the p2m table,
and skip the p2m lookup to go from gfn to mfn. Instead, we now
provide a simple pagetable that gives a one-to-one mapping of 4GB, and
shadow that, making the translations from gfn to mfn via the p2m.
This removes the paging-disabled special-case code from the shadow
fault handler, and allows us to expand the p2m interface, since all HVM
translations now go through the same p2m lookups.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>
author Tim Deegan <Tim.Deegan@xensource.com>
date Fri Aug 31 11:06:22 2007 +0100 (2007-08-31)
parents 3838105ab03b
children
line source
1 #ifndef __ASM_HARDIRQ_H
2 #define __ASM_HARDIRQ_H
4 #include <xen/config.h>
5 #include <xen/cache.h>
7 typedef struct {
8 unsigned long __softirq_pending;
9 unsigned int __local_irq_count;
10 unsigned int __nmi_count;
11 } __cacheline_aligned irq_cpustat_t;
13 #include <xen/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
15 #define in_irq() (local_irq_count(smp_processor_id()) != 0)
17 #define irq_enter() (local_irq_count(smp_processor_id())++)
18 #define irq_exit() (local_irq_count(smp_processor_id())--)
20 void ack_bad_irq(unsigned int irq);
22 extern void apic_intr_init(void);
23 extern void smp_intr_init(void);
25 #endif /* __ASM_HARDIRQ_H */