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https://github.com/edk2-porting/linux-next.git
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aa8532c322
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>
98 lines
2.0 KiB
C
98 lines
2.0 KiB
C
#include <linux/types.h>
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#include <linux/clockchips.h>
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#include <xen/interface/xen.h>
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#include <xen/grant_table.h>
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#include <xen/events.h>
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#include <asm/xen/hypercall.h>
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#include <asm/xen/page.h>
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#include <asm/fixmap.h>
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#include "xen-ops.h"
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#include "mmu.h"
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static void xen_pv_pre_suspend(void)
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{
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xen_mm_pin_all();
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xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
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xen_start_info->console.domU.mfn =
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mfn_to_pfn(xen_start_info->console.domU.mfn);
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BUG_ON(!irqs_disabled());
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HYPERVISOR_shared_info = &xen_dummy_shared_info;
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if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
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__pte_ma(0), 0))
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BUG();
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}
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static void xen_hvm_post_suspend(int suspend_cancelled)
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{
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#ifdef CONFIG_XEN_PVHVM
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int cpu;
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xen_hvm_init_shared_info();
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xen_callback_vector();
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xen_unplug_emulated_devices();
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if (xen_feature(XENFEAT_hvm_safe_pvclock)) {
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for_each_online_cpu(cpu) {
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xen_setup_runstate_info(cpu);
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}
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}
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#endif
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}
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static void xen_pv_post_suspend(int suspend_cancelled)
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{
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xen_build_mfn_list_list();
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xen_setup_shared_info();
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if (suspend_cancelled) {
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xen_start_info->store_mfn =
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pfn_to_mfn(xen_start_info->store_mfn);
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xen_start_info->console.domU.mfn =
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pfn_to_mfn(xen_start_info->console.domU.mfn);
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} else {
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#ifdef CONFIG_SMP
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BUG_ON(xen_cpu_initialized_map == NULL);
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cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
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#endif
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xen_vcpu_restore();
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}
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xen_mm_unpin_all();
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}
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void xen_arch_pre_suspend(void)
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{
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if (xen_pv_domain())
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xen_pv_pre_suspend();
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}
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void xen_arch_post_suspend(int cancelled)
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{
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if (xen_pv_domain())
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xen_pv_post_suspend(cancelled);
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else
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xen_hvm_post_suspend(cancelled);
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}
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static void xen_vcpu_notify_restore(void *data)
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{
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unsigned long reason = (unsigned long)data;
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/* Boot processor notified via generic timekeeping_resume() */
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if ( smp_processor_id() == 0)
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return;
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clockevents_notify(reason, NULL);
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}
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void xen_arch_resume(void)
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{
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on_each_cpu(xen_vcpu_notify_restore,
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(void *)CLOCK_EVT_NOTIFY_RESUME, 1);
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}
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