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xen: refactor suspend pre/post hooks

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New architectures currently have to provide implementations of 5 different
functions: xen_arch_pre_suspend(), xen_arch_post_suspend(),
xen_arch_hvm_post_suspend(), xen_mm_pin_all(), and xen_mm_unpin_all().

Refactor the suspend code to only require xen_arch_pre_suspend() and
xen_arch_post_suspend().

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This commit is contained in:
David Vrabel
2014-05-08 11:09:23 +01:00
parent 9f1d341415
commit aa8532c322
4 changed files with 29 additions and 45 deletions
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23
arch/x86/xen/suspend.c
View File

@@ -12,8 +12,10 @@
#include "xen-ops.h"
#include "mmu.h"
void xen_arch_pre_suspend(void)
static void xen_pv_pre_suspend(void)
{
xen_mm_pin_all();
xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
xen_start_info->console.domU.mfn =
mfn_to_pfn(xen_start_info->console.domU.mfn);
@@ -26,7 +28,7 @@ void xen_arch_pre_suspend(void)
BUG();
}
void xen_arch_hvm_post_suspend(int suspend_cancelled)
static void xen_hvm_post_suspend(int suspend_cancelled)
{
#ifdef CONFIG_XEN_PVHVM
int cpu;
@@ -41,7 +43,7 @@ void xen_arch_hvm_post_suspend(int suspend_cancelled)
#endif
}
void xen_arch_post_suspend(int suspend_cancelled)
static void xen_pv_post_suspend(int suspend_cancelled)
{
xen_build_mfn_list_list();
@@ -60,6 +62,21 @@ void xen_arch_post_suspend(int suspend_cancelled)
xen_vcpu_restore();
}
xen_mm_unpin_all();
}
void xen_arch_pre_suspend(void)
{
if (xen_pv_domain())
xen_pv_pre_suspend();
}
void xen_arch_post_suspend(int cancelled)
{
if (xen_pv_domain())
xen_pv_post_suspend(cancelled);
else
xen_hvm_post_suspend(cancelled);
}
static void xen_vcpu_notify_restore(void *data)

2
arch/x86/xen/xen-ops.h
View File

@@ -31,6 +31,8 @@ void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
void xen_reserve_top(void);
extern unsigned long xen_max_p2m_pfn;
void xen_mm_pin_all(void);
void xen_mm_unpin_all(void);
void xen_set_pat(u64);
char * __init xen_memory_setup(void);