void guest_physmap_remove_page(struct domain *d,
unsigned long gpfn,
unsigned long mfn, unsigned int page_order)
{
apply_p2m_changes(d, REMOVE,
pfn_to_paddr(gpfn),
pfn_to_paddr(gpfn + (1<<page_order)),
pfn_to_paddr(mfn), MATTR_MEM, p2m_invalid);
}
int relinquish_p2m_mapping(struct domain *d)
{
struct p2m_domain *p2m = &d->arch.p2m;
return apply_p2m_changes(d, RELINQUISH,
pfn_to_paddr(p2m->lowest_mapped_gfn),
pfn_to_paddr(p2m->max_mapped_gfn),
pfn_to_paddr(INVALID_MFN),
MATTR_MEM, p2m_invalid);
}
int guest_physmap_add_entry(struct domain *d,
unsigned long gpfn,
unsigned long mfn,
unsigned long page_order,
p2m_type_t t)
{
return apply_p2m_changes(d, INSERT,
pfn_to_paddr(gpfn),
pfn_to_paddr(gpfn + (1 << page_order)),
pfn_to_paddr(mfn), MATTR_MEM, t);
}
int p2m_cache_flush(struct domain *d, xen_pfn_t start_mfn, xen_pfn_t end_mfn)
{
struct p2m_domain *p2m = &d->arch.p2m;
start_mfn = MAX(start_mfn, p2m->lowest_mapped_gfn);
end_mfn = MIN(end_mfn, p2m->max_mapped_gfn);
return apply_p2m_changes(d, CACHEFLUSH,
pfn_to_paddr(start_mfn),
pfn_to_paddr(end_mfn),
pfn_to_paddr(INVALID_MFN),
MATTR_MEM, p2m_invalid);
}
unsigned long long
vtop_x86_remap(unsigned long vaddr)
{
int i;
for (i = 0; i < max_numnodes; ++i)
if (vaddr >= remap_start_vaddr[i] &&
vaddr < remap_end_vaddr[i])
return pfn_to_paddr(remap_start_pfn[i]) +
vaddr - remap_start_vaddr[i];
return NOT_PADDR;
}
unsigned long gmfn_to_mfn(struct domain *d, unsigned long gpfn)
{
paddr_t p = p2m_lookup(d, pfn_to_paddr(gpfn), NULL);
return p >> PAGE_SHIFT;
}
int
get_machdep_info_x86_64(void)
{
int i, j, mfns[MAX_X86_64_FRAMES];
unsigned long frame_mfn[MAX_X86_64_FRAMES];
unsigned long buf[MFNS_PER_FRAME];
info->section_size_bits = _SECTION_SIZE_BITS;
if (!is_xen_memory())
return TRUE;
/*
* Get the information for translating domain-0's physical
* address into machine address.
*/
if (!readmem(MADDR_XEN, pfn_to_paddr(get_xen_p2m_mfn()),
&frame_mfn, PAGESIZE())) {
ERRMSG("Can't get p2m_mfn.\n");
return FALSE;
}
/*
* Count the number of p2m frame.
*/
for (i = 0; i < MAX_X86_64_FRAMES; i++) {
mfns[i] = 0;
if (!frame_mfn[i])
break;
if (!readmem(MADDR_XEN, pfn_to_paddr(frame_mfn[i]), &buf,
PAGESIZE())) {
ERRMSG("Can't get frame_mfn[%d].\n", i);
return FALSE;
}
for (j = 0; j < MFNS_PER_FRAME; j++) {
if (!buf[j])
break;
mfns[i]++;
}
info->p2m_frames += mfns[i];
}
info->p2m_mfn_frame_list
= malloc(sizeof(unsigned long) * info->p2m_frames);
if (info->p2m_mfn_frame_list == NULL) {
ERRMSG("Can't allocate memory for p2m_mfn_frame_list. %s\n",
strerror(errno));
return FALSE;
}
/*
* Get p2m_mfn_frame_list.
*/
for (i = 0; i < MAX_X86_64_FRAMES; i++) {
if (!frame_mfn[i])
break;
if (!readmem(MADDR_XEN, pfn_to_paddr(frame_mfn[i]),
&info->p2m_mfn_frame_list[i * MFNS_PER_FRAME],
mfns[i] * sizeof(unsigned long))) {
ERRMSG("Can't get p2m_mfn_frame_list.\n");
return FALSE;
}
if (mfns[i] != MFNS_PER_FRAME)
break;
}
return TRUE;
}
static void __init setup_mm(unsigned long dtb_paddr, size_t dtb_size)
{
paddr_t ram_start, ram_end, ram_size;
paddr_t contig_start, contig_end;
paddr_t s, e;
unsigned long ram_pages;
unsigned long heap_pages, xenheap_pages, domheap_pages;
unsigned long dtb_pages;
unsigned long boot_mfn_start, boot_mfn_end;
int i;
void *fdt;
if ( !early_info.mem.nr_banks )
early_panic("No memory bank");
/*
* We are going to accumulate two regions here.
*
* The first is the bounds of the initial memory region which is
* contiguous with the first bank. For simplicity the xenheap is
* always allocated from this region.
*
* The second is the complete bounds of the regions containing RAM
* (ie. from the lowest RAM address to the highest), which
* includes any holes.
*
* We also track the number of actual RAM pages (i.e. not counting
* the holes).
*/
ram_size = early_info.mem.bank[0].size;
contig_start = ram_start = early_info.mem.bank[0].start;
contig_end = ram_end = ram_start + ram_size;
for ( i = 1; i < early_info.mem.nr_banks; i++ )
{
paddr_t bank_start = early_info.mem.bank[i].start;
paddr_t bank_size = early_info.mem.bank[i].size;
paddr_t bank_end = bank_start + bank_size;
paddr_t new_ram_size = ram_size + bank_size;
paddr_t new_ram_start = min(ram_start,bank_start);
paddr_t new_ram_end = max(ram_end,bank_end);
/*
* If the new bank is contiguous with the initial contiguous
* region then incorporate it into the contiguous region.
*
* Otherwise we allow non-contigious regions so long as at
* least half of the total RAM region actually contains
* RAM. We actually fudge this slightly and require that
* adding the current bank does not cause us to violate this
* restriction.
*
* This restriction ensures that the frametable (which is not
* currently sparse) does not consume all available RAM.
*/
if ( bank_start == contig_end )
contig_end = bank_end;
else if ( bank_end == contig_start )
contig_start = bank_start;
else if ( 2 * new_ram_size < new_ram_end - new_ram_start )
/* Would create memory map which is too sparse, so stop here. */
break;
ram_size = new_ram_size;
ram_start = new_ram_start;
ram_end = new_ram_end;
}
if ( i != early_info.mem.nr_banks )
{
early_printk("WARNING: only using %d out of %d memory banks\n",
i, early_info.mem.nr_banks);
early_info.mem.nr_banks = i;
}
total_pages = ram_pages = ram_size >> PAGE_SHIFT;
/*
* Locate the xenheap using these constraints:
*
* - must be 32 MiB aligned
* - must not include Xen itself or the boot modules
* - must be at most 1/8 the total RAM in the system
* - must be at least 128M
*
* We try to allocate the largest xenheap possible within these
* constraints.
*/
heap_pages = ram_pages;
xenheap_pages = (heap_pages/8 + 0x1fffUL) & ~0x1fffUL;
xenheap_pages = max(xenheap_pages, 128UL<<(20-PAGE_SHIFT));
do
{
/* xenheap is always in the initial contiguous region */
e = consider_modules(contig_start, contig_end,
pfn_to_paddr(xenheap_pages),
32<<20, 0);
if ( e )
break;
xenheap_pages >>= 1;
} while ( xenheap_pages > 128<<(20-PAGE_SHIFT) );
if ( ! e )
early_panic("Not not enough space for xenheap");
domheap_pages = heap_pages - xenheap_pages;
early_printk("Xen heap: %"PRIpaddr"-%"PRIpaddr" (%lu pages)\n",
e - (pfn_to_paddr(xenheap_pages)), e,
xenheap_pages);
early_printk("Dom heap: %lu pages\n", domheap_pages);
setup_xenheap_mappings((e >> PAGE_SHIFT) - xenheap_pages, xenheap_pages);
/*
* Need a single mapped page for populating bootmem_region_list
* and enough mapped pages for copying the DTB.
*/
dtb_pages = (dtb_size + PAGE_SIZE-1) >> PAGE_SHIFT;
boot_mfn_start = xenheap_mfn_end - dtb_pages - 1;
boot_mfn_end = xenheap_mfn_end;
init_boot_pages(pfn_to_paddr(boot_mfn_start), pfn_to_paddr(boot_mfn_end));
/* Copy the DTB. */
fdt = mfn_to_virt(alloc_boot_pages(dtb_pages, 1));
copy_from_paddr(fdt, dtb_paddr, dtb_size, BUFFERABLE);
device_tree_flattened = fdt;
/* Add non-xenheap memory */
for ( i = 0; i < early_info.mem.nr_banks; i++ )
{
paddr_t bank_start = early_info.mem.bank[i].start;
paddr_t bank_end = bank_start + early_info.mem.bank[i].size;
s = bank_start;
while ( s < bank_end )
{
paddr_t n = bank_end;
e = next_module(s, &n);
if ( e == ~(paddr_t)0 )
{
e = n = ram_end;
}
/*
* Module in a RAM bank other than the one which we are
* not dealing with here.
*/
if ( e > bank_end )
e = bank_end;
/* Avoid the xenheap */
if ( s < pfn_to_paddr(xenheap_mfn_start+xenheap_pages)
&& pfn_to_paddr(xenheap_mfn_start) < e )
{
e = pfn_to_paddr(xenheap_mfn_start);
n = pfn_to_paddr(xenheap_mfn_start+xenheap_pages);
}
dt_unreserved_regions(s, e, init_boot_pages, 0);
s = n;
}
}
/* Frame table covers all of RAM region, including holes */
setup_frametable_mappings(ram_start, ram_end);
max_page = PFN_DOWN(ram_end);
/* Add xenheap memory that was not already added to the boot
allocator. */
init_xenheap_pages(pfn_to_paddr(xenheap_mfn_start),
pfn_to_paddr(boot_mfn_start));
end_boot_allocator();
}
static void __init setup_mm(unsigned long dtb_paddr, size_t dtb_size)
{
paddr_t ram_start, ram_end, ram_size;
paddr_t s, e;
unsigned long ram_pages;
unsigned long heap_pages, xenheap_pages, domheap_pages;
unsigned long dtb_pages;
unsigned long boot_mfn_start, boot_mfn_end;
int i;
void *fdt;
if ( !bootinfo.mem.nr_banks )
panic("No memory bank");
init_pdx();
ram_start = bootinfo.mem.bank[0].start;
ram_size = bootinfo.mem.bank[0].size;
ram_end = ram_start + ram_size;
for ( i = 1; i < bootinfo.mem.nr_banks; i++ )
{
paddr_t bank_start = bootinfo.mem.bank[i].start;
paddr_t bank_size = bootinfo.mem.bank[i].size;
paddr_t bank_end = bank_start + bank_size;
ram_size = ram_size + bank_size;
ram_start = min(ram_start,bank_start);
ram_end = max(ram_end,bank_end);
}
total_pages = ram_pages = ram_size >> PAGE_SHIFT;
/*
* If the user has not requested otherwise via the command line
* then locate the xenheap using these constraints:
*
* - must be 32 MiB aligned
* - must not include Xen itself or the boot modules
* - must be at most 1GB or 1/32 the total RAM in the system if less
* - must be at least 32M
*
* We try to allocate the largest xenheap possible within these
* constraints.
*/
heap_pages = ram_pages;
if ( opt_xenheap_megabytes )
xenheap_pages = opt_xenheap_megabytes << (20-PAGE_SHIFT);
else
{
xenheap_pages = (heap_pages/32 + 0x1fffUL) & ~0x1fffUL;
xenheap_pages = max(xenheap_pages, 32UL<<(20-PAGE_SHIFT));
xenheap_pages = min(xenheap_pages, 1UL<<(30-PAGE_SHIFT));
}
do
{
e = consider_modules(ram_start, ram_end,
pfn_to_paddr(xenheap_pages),
32<<20, 0);
if ( e )
break;
xenheap_pages >>= 1;
} while ( !opt_xenheap_megabytes && xenheap_pages > 32<<(20-PAGE_SHIFT) );
if ( ! e )
panic("Not not enough space for xenheap");
domheap_pages = heap_pages - xenheap_pages;
printk("Xen heap: %"PRIpaddr"-%"PRIpaddr" (%lu pages%s)\n",
e - (pfn_to_paddr(xenheap_pages)), e, xenheap_pages,
opt_xenheap_megabytes ? ", from command-line" : "");
printk("Dom heap: %lu pages\n", domheap_pages);
setup_xenheap_mappings((e >> PAGE_SHIFT) - xenheap_pages, xenheap_pages);
/*
* Need a single mapped page for populating bootmem_region_list
* and enough mapped pages for copying the DTB.
*/
dtb_pages = (dtb_size + PAGE_SIZE-1) >> PAGE_SHIFT;
boot_mfn_start = xenheap_mfn_end - dtb_pages - 1;
boot_mfn_end = xenheap_mfn_end;
init_boot_pages(pfn_to_paddr(boot_mfn_start), pfn_to_paddr(boot_mfn_end));
/* Copy the DTB. */
fdt = mfn_to_virt(alloc_boot_pages(dtb_pages, 1));
copy_from_paddr(fdt, dtb_paddr, dtb_size);
device_tree_flattened = fdt;
/* Add non-xenheap memory */
for ( i = 0; i < bootinfo.mem.nr_banks; i++ )
{
paddr_t bank_start = bootinfo.mem.bank[i].start;
paddr_t bank_end = bank_start + bootinfo.mem.bank[i].size;
s = bank_start;
while ( s < bank_end )
{
paddr_t n = bank_end;
e = next_module(s, &n);
if ( e == ~(paddr_t)0 )
{
e = n = ram_end;
}
/*
* Module in a RAM bank other than the one which we are
* not dealing with here.
*/
if ( e > bank_end )
e = bank_end;
/* Avoid the xenheap */
if ( s < pfn_to_paddr(xenheap_mfn_start+xenheap_pages)
&& pfn_to_paddr(xenheap_mfn_start) < e )
{
e = pfn_to_paddr(xenheap_mfn_start);
n = pfn_to_paddr(xenheap_mfn_start+xenheap_pages);
}
dt_unreserved_regions(s, e, init_boot_pages, 0);
s = n;
}
}
/* Frame table covers all of RAM region, including holes */
setup_frametable_mappings(ram_start, ram_end);
max_page = PFN_DOWN(ram_end);
/* Add xenheap memory that was not already added to the boot
allocator. */
init_xenheap_pages(pfn_to_paddr(xenheap_mfn_start),
pfn_to_paddr(boot_mfn_start));
}
