gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ARMv8.2-LPA support

Browse Source 
Change-Id: I12a6eac55af2e7f6a643e4e04ed59a85769f4063
This commit is contained in:
TOIDA,Suguru
2018-11-30 09:18:52 +09:00
committed by Masamichi Takagi
parent 4ba4bbd711
commit 96b6d773a9
6 changed files with 47 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
arch/arm64/kernel/memory.c
View File

@ -1631,21 +1631,15 @@ static int split_large_page(pte_t *ptep, size_t pgsize)
unsigned long under_pgsize;
// ラージページ判定
switch (pgsize)
{
#if FIRST_LEVEL_BLOCK_SUPPORT
case __PTL3_SIZE:
if (first_level_block_support && pgsize == PTL3_SIZE) {
table_level = 3;
entries = PTL3_ENTRIES;
under_pgsize = PTL2_SIZE;
break;
#endif
case __PTL2_SIZE:
} else if (pgsize == PTL2_SIZE) {
table_level = 2;
entries = PTL2_ENTRIES;
under_pgsize = PTL1_SIZE;
break;
default:
} else {
ekprintf("split_large_page:invalid pgsize %#lx\n", pgsize);
return -EINVAL;
}
@ -2200,7 +2194,7 @@ static pte_t *lookup_pte(translation_table_t* tt, uintptr_t virt, int pgshift,
ptep = NULL;
if (!pgshift) {
if (FIRST_LEVEL_BLOCK_SUPPORT) {
if (first_level_block_support) {
pgshift = PTL3_CONT_SHIFT;
} else {
pgshift = PTL2_CONT_SHIFT;
@ -2413,7 +2407,7 @@ retry:
if (ptl_null(ptep, level) || (args->overwrite && ptl_type_page(ptep, level))) {
pte_t pte;
uintptr_t phys;
if (level == 2 || (level == 3 && FIRST_LEVEL_BLOCK_SUPPORT)) {
if (level == 2 || (level == 3 && first_level_block_support)) {
if ((start <= base) && ((base + tbl.pgsize) <= end)
&& ((args->diff & (tbl.pgsize - 1)) == 0)
&& (!args->pgshift
@ -2579,7 +2573,7 @@ int ihk_mc_pt_set_pte(page_table_t pt, pte_t *ptep, size_t pgsize,
pte = phys | attr_to_l2attr(attr | PTATTR_LARGEPAGE);
ptl2_set(ptep, pte);
}
else if (pgsize == PTL3_SIZE && FIRST_LEVEL_BLOCK_SUPPORT) {
else if (pgsize == PTL3_SIZE && first_level_block_support) {
if (phys & (PTL3_SIZE - 1)) {
kprintf("%s: error: phys needs to be PTL3_SIZE aligned\n", __FUNCTION__);
error = -1;
@ -2928,10 +2922,23 @@ void init_low_area(struct page_table *pt)
set_pt_large_page(pt, 0, 0, PTATTR_NO_EXECUTE|PTATTR_WRITABLE);
}
int first_level_block_support;
void init_page_table(void)
{
uint64_t parange;
ihk_mc_spinlock_init(&init_pt_lock);
if (PAGE_SIZE == _SZ4KB) {
first_level_block_support = 1;
} else if (PAGE_SIZE == _SZ16KB) {
first_level_block_support = 0;
} else {
parange = read_sysreg(id_aa64mmfr0_el1) & 7;
first_level_block_support =
(parange >= ID_AA64MMFR0_PARANGE_52);
}
/* Normal memory area */
init_normal_area(init_pt);
init_fixed_area(init_pt);