On 9/10/25 8:07 PM, Claudio Imbrenda wrote:
Add page table management functions to be used for KVM guest (gmap)
page tables.
This patch adds the boilerplate and functions for the allocation and
deallocation of DAT tables.
Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
+void dat_free_level(struct crst_table *table, bool owns_ptes);
+struct page_table *dat_alloc_pt(unsigned long pte_bits, unsigned long pgste_bits);
+struct crst_table *dat_alloc_crst(unsigned long init);
+
static inline struct crst_table *crste_table_start(union crste *crstep)
{
return (struct crst_table *)ALIGN_DOWN((unsigned long)crstep, _CRST_TABLE_SIZE);
diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c
index 01f9b39e65f5..5bee173db72e 100644
--- a/arch/s390/mm/page-states.c
+++ b/arch/s390/mm/page-states.c
@@ -13,6 +13,7 @@
#include <asm/page.h>
int __bootdata_preserved(cmma_flag);
+EXPORT_SYMBOL(cmma_flag);
Why does this need to be exported?
