Unverified Commit 4e06490b authored by liuzh's avatar liuzh Committed by Liu Zhehui
Browse files

haoc: fix memory recognization issue 

community inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IBTMTU



--------------------------------

add support for large memory (more than 1TB) in HAOC-ARM64 IEE.

Fixes: 8d2e6d1b ("haoc: add support for lagre memory")
Signed-off-by: default avatarliuzh <liuzhh@zgclab.edu.cn>
parent fa8019b6

arch/arm64/include/asm/memory.h

+0 −4
Original line number Diff line number Diff line
@@ -77,11 +77,7 @@ 
#define KASAN_THREAD_SHIFT	1

#else

#define KASAN_THREAD_SHIFT	0

#ifdef CONFIG_IEE

#define PAGE_END		((UL(1) << ((VA_BITS_MIN) - 2)) | PAGE_OFFSET)

#else

#define PAGE_END		(_PAGE_END(VA_BITS_MIN))

#endif

#endif /* CONFIG_KASAN */



#define MIN_THREAD_SHIFT	(14 + KASAN_THREAD_SHIFT)

arch/arm64/kernel/haoc/iee/iee-func.c

+4 −0
Original line number Diff line number Diff line
@@ -217,6 +217,9 @@ void put_pages_into_iee(unsigned long addr, int order) 
{

	unsigned long end = addr + (PAGE_SIZE << order);



	if (addr & IEE_OFFSET)

		return;



	/* Split the address range if needed. */

	if (order < IEE_DATA_ORDER)

		put_pages_into_iee_block(addr, order);
@@ -312,3 +315,4 @@ asmlinkage void notrace iee_bad_mode(struct pt_regs *regs, int reason, 


	panic("bad mode");

}

arch/arm64/kernel/haoc/iee/iee-mmu.c

+6 −1
Original line number Diff line number Diff line
@@ -436,13 +436,18 @@ static void __init __create_pgd_mapping_for_iee_locked(pgd_t *pgdir, phys_addr_t 


	do {

		next = pgd_addr_end(addr, end);

		p4dp = p4d_offset(pgdp, addr);

		p4d = READ_ONCE(*p4dp);

		if (!p4d_none(p4d) && !(p4d_val(p4d) & PGD_APTABLE_RO)) {

			phys += next - addr;

			continue;

		}

		iee_alloc_init_pud(pgdp, addr, next, phys, prot, pgtable_alloc,

			       flags);



		/* Set APTable RO on pgd entries of IEE mappings to prevent kernel access

		 * when TCR.HPD1 == 0.

		 */

		p4dp = p4d_offset(pgdp, addr);

		p4d = READ_ONCE(*p4dp);

		__p4d_populate(p4dp, __p4d_to_phys(p4d), (PGD_APTABLE_RO | PGD_PXNTABLE |

				PGD_UXNTABLE | PUD_TYPE_TABLE));