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init_normal_area(): fix mapping start physical address

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Cherry-pick of 2d3006818473af50c38a3d0e33595b4e74588004
This commit is contained in:
Balazs Gerofi
2018-02-19 11:00:34 +09:00
parent ca7edf1df8
commit f658173269
1 changed files with 10 additions and 6 deletions
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16
arch/x86_64/kernel/memory.c
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@ -173,19 +173,23 @@ static void init_normal_area(struct page_table *pt)
unsigned long map_start, map_end, phys, pt_phys;
int ident_index, virt_index;
map_start = ihk_mc_get_memory_address(IHK_MC_GMA_MAP_START, 0);
/*
* This has to start from 0x00, see load_file() in IHK-SMP.
* For security reasons, we could skip holes in the LWK
* assigned physical memory, but Linux mappings already map
* those anyway.
*/
map_start = 0;
map_end = ihk_mc_get_memory_address(IHK_MC_GMA_MAP_END, 0);
kprintf("map_start = %lx, map_end = %lx\n", map_start, map_end);
ident_index = map_start >> PTL4_SHIFT;
virt_index = (MAP_ST_START >> PTL4_SHIFT) & (PT_ENTRIES - 1);
memset(pt, 0, sizeof(struct page_table));
for (phys = (map_start & ~(PTL4_SIZE - 1)); phys < map_end;
phys += PTL4_SIZE) {
pt_phys = setup_l3(ihk_mc_alloc_pages(1, IHK_MC_AP_CRITICAL), phys,
map_start, map_end);
for (phys = map_start; phys < map_end; phys += PTL4_SIZE) {
pt_phys = setup_l3(ihk_mc_alloc_pages(1, IHK_MC_AP_CRITICAL),
phys, map_start, map_end);
pt->entry[ident_index++] = pt_phys | PFL4_PDIR_ATTR;
pt->entry[virt_index++] = pt_phys | PFL4_PDIR_ATTR;