Differential D16972 Diff 47598 head/sys/amd64/amd64/efirt_machdep.c

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head/sys/amd64/amd64/efirt_machdep.c

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#include <machine/fpu.h>		#include <machine/fpu.h>
#include <machine/efi.h>		#include <machine/efi.h>
#include <machine/metadata.h>		#include <machine/metadata.h>
#include <machine/md_var.h>		#include <machine/md_var.h>
#include <machine/smp.h>		#include <machine/smp.h>
#include <machine/vmparam.h>		#include <machine/vmparam.h>
#include <vm/vm.h>		#include <vm/vm.h>
#include <vm/pmap.h>		#include <vm/pmap.h>
		#include <vm/vm_extern.h>
#include <vm/vm_map.h>		#include <vm/vm_map.h>
#include <vm/vm_object.h>		#include <vm/vm_object.h>
#include <vm/vm_page.h>		#include <vm/vm_page.h>
#include <vm/vm_pager.h>		#include <vm/vm_pager.h>

static pml4_entry_t *efi_pml4;		static pml4_entry_t *efi_pml4;
static vm_object_t obj_1t1_pt;		static vm_object_t obj_1t1_pt;
static vm_page_t efi_pml4_page;		static vm_page_t efi_pml4_page;
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*/		*/
int		int
efi_arch_enter(void)		efi_arch_enter(void)
{		{
pmap_t curpmap;		pmap_t curpmap;

curpmap = PCPU_GET(curpmap);		curpmap = PCPU_GET(curpmap);
PMAP_LOCK_ASSERT(curpmap, MA_OWNED);		PMAP_LOCK_ASSERT(curpmap, MA_OWNED);
		curthread->td_md.md_efirt_dis_pf = vm_fault_disable_pagefaults();

/*		/*
* IPI TLB shootdown handler invltlb_pcid_handler() reloads		* IPI TLB shootdown handler invltlb_pcid_handler() reloads
* %cr3 from the curpmap->pm_cr3, which would disable runtime		* %cr3 from the curpmap->pm_cr3, which would disable runtime
* segments mappings. Block the handler's action by setting		* segments mappings. Block the handler's action by setting
* curpmap to impossible value. See also comment in		* curpmap to impossible value. See also comment in
* pmap.c:pmap_activate_sw().		* pmap.c:pmap_activate_sw().
*/		*/
Show All 18 Lines	efi_arch_leave(void)

curpmap = &curproc->p_vmspace->vm_pmap;		curpmap = &curproc->p_vmspace->vm_pmap;
if (pmap_pcid_enabled && !invpcid_works)		if (pmap_pcid_enabled && !invpcid_works)
PCPU_SET(curpmap, curpmap);		PCPU_SET(curpmap, curpmap);
load_cr3(curpmap->pm_cr3 \| (pmap_pcid_enabled ?		load_cr3(curpmap->pm_cr3 \| (pmap_pcid_enabled ?
curpmap->pm_pcids[PCPU_GET(cpuid)].pm_pcid : 0));		curpmap->pm_pcids[PCPU_GET(cpuid)].pm_pcid : 0));
if (!pmap_pcid_enabled)		if (!pmap_pcid_enabled)
invltlb();		invltlb();
		vm_fault_enable_pagefaults(curthread->td_md.md_efirt_dis_pf);
}		}

/* XXX debug stuff */		/* XXX debug stuff */
static int		static int
efi_time_sysctl_handler(SYSCTL_HANDLER_ARGS)		efi_time_sysctl_handler(SYSCTL_HANDLER_ARGS)
{		{
struct efi_tm tm;		struct efi_tm tm;
int error, val;		int error, val;
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