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

init_process_stack: change premapped stack size based on arch

Browse Source 
Avoid consuming a large 512MB page on 64K base page arch

Change-Id: Ice491d43fd998b375ddc24f4eff7faf5d36d9f42
Fujitsu: POSTK_DEBUG_ARCH_DEP_104
This commit is contained in:
Dominique Martinet
2019-01-28 17:22:37 +09:00
parent 960a6f5f90
commit 2b254f02f8
3 changed files with 30 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm64/kernel/include/arch-memory.h
View File

@ -330,6 +330,18 @@ static const unsigned int PTL1_CONT_COUNT = __PTL1_CONT_COUNT;
#define PTE_FILEOFF PTE_SPECIAL
#ifdef CONFIG_ARM64_64K_PAGES
# define USER_STACK_PREPAGE_SIZE PAGE_SIZE
# define USER_STACK_PAGE_MASK PAGE_MASK
# define USER_STACK_PAGE_P2ALIGN PAGE_P2ALIGN
# define USER_STACK_PAGE_SHIFT PAGE_SHIFT
#else
# define USER_STACK_PREPAGE_SIZE LARGE_PAGE_SIZE
# define USER_STACK_PAGE_MASK LARGE_PAGE_MASK
# define USER_STACK_PAGE_P2ALIGN LARGE_PAGE_P2ALIGN
# define USER_STACK_PAGE_SHIFT LARGE_PAGE_SHIFT
#endif
#define PT_ENTRIES (PAGE_SIZE >> 3)
#ifndef __ASSEMBLY__

4
arch/x86_64/kernel/include/arch-memory.h
View File

@ -160,6 +160,10 @@ typedef unsigned long pte_t;
#define PM_PRESENT PM_STATUS(4LL)
#define PM_SWAP PM_STATUS(2LL)
#define USER_STACK_PREPAGE_SIZE LARGE_PAGE_SIZE
#define USER_STACK_PAGE_MASK LARGE_PAGE_MASK
#define USER_STACK_PAGE_P2ALIGN LARGE_PAGE_P2ALIGN
#define USER_STACK_PAGE_SHIFT LARGE_PAGE_SHIFT
/* For easy conversion, it is better to be the same as architecture's ones */
enum ihk_mc_pt_attribute {