forked from Minki/linux
fa24ba62ea
pvops kernels >= 2.6.30 can currently only be saved and restored once. The
second attempt to save results in:
ERROR Internal error: Frame# in pfn-to-mfn frame list is not in pseudophys
ERROR Internal error: entry 0: p2m_frame_list[0] is 0xf2c2c2c2, max 0x120000
ERROR Internal error: Failed to map/save the p2m frame list
I finally narrowed it down to:
commit cdaead6b4e
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Date: Fri Feb 27 15:34:59 2009 -0800
xen: split construction of p2m mfn tables from registration
Build the p2m_mfn_list_list early with the rest of the p2m table, but
register it later when the real shared_info structure is in place.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
The unforeseen side-effect of this change was to cause the mfn list list to not
be rebuilt on resume. Prior to this change it would have been rebuilt via
xen_post_suspend() -> xen_setup_shared_info() -> xen_setup_mfn_list_list().
Fix by explicitly calling xen_build_mfn_list_list() from xen_post_suspend().
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
#include <linux/types.h>
|
|
|
|
#include <xen/interface/xen.h>
|
|
#include <xen/grant_table.h>
|
|
#include <xen/events.h>
|
|
|
|
#include <asm/xen/hypercall.h>
|
|
#include <asm/xen/page.h>
|
|
#include <asm/fixmap.h>
|
|
|
|
#include "xen-ops.h"
|
|
#include "mmu.h"
|
|
|
|
void xen_pre_suspend(void)
|
|
{
|
|
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);
|
|
|
|
BUG_ON(!irqs_disabled());
|
|
|
|
HYPERVISOR_shared_info = &xen_dummy_shared_info;
|
|
if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
|
|
__pte_ma(0), 0))
|
|
BUG();
|
|
}
|
|
|
|
void xen_post_suspend(int suspend_cancelled)
|
|
{
|
|
xen_build_mfn_list_list();
|
|
|
|
xen_setup_shared_info();
|
|
|
|
if (suspend_cancelled) {
|
|
xen_start_info->store_mfn =
|
|
pfn_to_mfn(xen_start_info->store_mfn);
|
|
xen_start_info->console.domU.mfn =
|
|
pfn_to_mfn(xen_start_info->console.domU.mfn);
|
|
} else {
|
|
#ifdef CONFIG_SMP
|
|
BUG_ON(xen_cpu_initialized_map == NULL);
|
|
cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
|
|
#endif
|
|
xen_vcpu_restore();
|
|
}
|
|
|
|
}
|
|
|
|
void xen_arch_resume(void)
|
|
{
|
|
/* nothing */
|
|
}
|