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support private mapped file

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This commit is contained in:
NAKAMURA Gou
2013-08-09 20:55:17 +09:00
parent 603ef85454
commit 27172ad413
17 changed files with 1392 additions and 133 deletions
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16
arch/x86/kernel/memory.c
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@@ -7,6 +7,7 @@
#include <errno.h>
#include <list.h>
#include <process.h>
#include <page.h>
#define dkprintf(...)
#define ekprintf(...) kprintf(__VA_ARGS__)
@@ -820,16 +821,20 @@ static int clear_range_l1(void *args0, pte_t *ptep, uint64_t base,
{
struct clear_range_args *args = args0;
uint64_t phys;
struct page *page;
if (*ptep == PTE_NULL) {
return -ENOENT;
}
phys = *ptep & PT_PHYSMASK;
*ptep = 0;
*ptep = PTE_NULL;
if (args->free_physical) {
ihk_mc_free_pages(phys_to_virt(phys), 1);
page = phys_to_page(phys);
if (page && page_unmap(page)) {
ihk_mc_free_pages(phys_to_virt(phys), 1);
}
}
return 0;
@@ -842,6 +847,7 @@ static int clear_range_l2(void *args0, pte_t *ptep, uint64_t base,
uint64_t phys;
struct page_table *pt;
int error;
struct page *page;
if (*ptep == PTE_NULL) {
return -ENOENT;
@@ -866,8 +872,10 @@ static int clear_range_l2(void *args0, pte_t *ptep, uint64_t base,
*ptep = PTE_NULL;
if (args->free_physical) {
ihk_mc_free_pages(phys_to_virt(phys),
LARGE_PAGE_SIZE/PAGE_SIZE);
page = phys_to_page(phys);
if (page && page_unmap(page)) {
ihk_mc_free_pages(phys_to_virt(phys), PTL2_SIZE/PTL1_SIZE);
}
}
return 0;