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ia64/pv_ops/xen: preliminary to paravirtualizing fsys.S for xen. 

This is a preliminary patch to paravirtualizing fsys.S.
compile fsys.S twice one for native and one for xen, and switch
them at run tine.
Later fsys.S will be paravirtualized.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Isaku Yamahata 2009-03-04 21:05:35 +09:00 committed by Tony Luck
parent dd97d5cb54
commit 533bd15623
3 changed files with 18 additions and 1 deletions
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3
arch/ia64/include/asm/xen/inst.h
View File

@ -33,6 +33,9 @@
#define __paravirt_work_processed_syscall_target \
xen_work_processed_syscall
#define paravirt_fsyscall_table xen_fsyscall_table
#define paravirt_fsys_bubble_down xen_fsys_bubble_down
#define MOV_FROM_IFA(reg) \
movl reg = XSI_IFA; \
;; \

2
arch/ia64/xen/Makefile
View File

@ -10,7 +10,7 @@ obj-$(CONFIG_IA64_GENERIC) += machvec.o
AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
# xen multi compile
ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S
ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S fsys.S
ASM_PARAVIRT_OBJS = $(addprefix xen-,$(ASM_PARAVIRT_MULTI_COMPILE_SRCS:.S=.o))
obj-y += $(ASM_PARAVIRT_OBJS)
define paravirtualized_xen

14
arch/ia64/xen/xen_pv_ops.c
View File

@ -24,6 +24,7 @@
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/pm.h>
#include <linux/unistd.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/xencomm.h>
@ -165,6 +166,18 @@ static const struct pv_init_ops xen_init_ops __initconst = {
.post_smp_prepare_boot_cpu = xen_post_smp_prepare_boot_cpu,
};
/***************************************************************************
* pv_fsys_data
* addresses for fsys
*/
extern unsigned long xen_fsyscall_table[NR_syscalls];
extern char xen_fsys_bubble_down[];
struct pv_fsys_data xen_fsys_data __initdata = {
.fsyscall_table = (unsigned long *)xen_fsyscall_table,
.fsys_bubble_down = (void *)xen_fsys_bubble_down,
};
/***************************************************************************
* pv_cpu_ops
* intrinsics hooks.
@ -355,6 +368,7 @@ xen_setup_pv_ops(void)
xen_info_init();
pv_info = xen_info;
pv_init_ops = xen_init_ops;
pv_fsys_data = xen_fsys_data;
pv_cpu_ops = xen_cpu_ops;
pv_iosapic_ops = xen_iosapic_ops;
pv_irq_ops = xen_irq_ops;