hv: multiarch: move page table entry function

this patch moves function xx_offset and xx_index to common code,
Add arch interface arch_quirk/arch_pgtle_page_vaddr and
arch_pgtle_large.

Tracked-On: #8831
Signed-off-by: hangliu1 <hang1.liu@intel.com>
Reviewed-by: Liu, Yifan1 <yifan1.liu@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>

hypervisor/arch/x86/pgtable.c

@@ -0,0 +1,32 @@
+#include <asm/mmu.h>
+#include <asm/pgtable.h>
+
+uint64_t arch_pgtl_page_paddr(uint64_t pgtle)
+{
+	return pgtle & PFN_MASK;
+}
+
+/**
+ * @brief Check whether specified page table entry is pointing to huge page.
+ *
+ * PS(Page Size) flag indicates whether maps a 1-GByte page or 2MByte page or references a page directory table. This function
+ * checks this flag. This function is typically used in the context of setting up or modifying page tables where it's
+ * necessary to distinguish between large and regular page mappings.
+ *
+ * It returns the value that bit 7 is 1 if the specified pte maps a 1-GByte or 2MByte page, and 0 if references a page table.
+ *
+ * @param[in] pgtle The page directory pointer table entry to check.
+ *
+ * @return The value of PS flag in the PDPTE.
+ *
+ * @retval PAGE_PSE indicating mapping to a 1-GByte or 2MByte page.
+ * @retval 0 indicating reference to a page directory table.
+ *
+ * @pre N/A
+ *
+ * @post N/A
+ */
+uint64_t arch_pgtl_large(uint64_t pgtle)
+{
+	return pgtle & PAGE_PSE;
+}