Merge tag 'x86-mm-2023-06-27' of git://git.kernel.org/pub/scm/linux/k…

…ernel/git/tip/tip

Pull x86 mm updates from Ingo Molnar:

 - Remove Xen-PV leftovers from init_32.c

 - Fix __swp_entry_to_pte() warning splat for Xen PV guests, triggered
   on CONFIG_DEBUG_VM_PGTABLE=y

* tag 'x86-mm-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Remove Xen-PV leftovers from init_32.c
  x86/mm: Fix __swp_entry_to_pte() for Xen PV guests

arch/x86/include/asm/pgtable_64.h

@@ -237,8 +237,8 @@ static inline void native_pgd_clear(pgd_t *pgd)
 
 #define __pte_to_swp_entry(pte)		((swp_entry_t) { pte_val((pte)) })
 #define __pmd_to_swp_entry(pmd)		((swp_entry_t) { pmd_val((pmd)) })
-#define __swp_entry_to_pte(x)		((pte_t) { .pte = (x).val })
-#define __swp_entry_to_pmd(x)		((pmd_t) { .pmd = (x).val })
+#define __swp_entry_to_pte(x)		(__pte((x).val))
+#define __swp_entry_to_pmd(x)		(__pmd((x).val))
 
 extern void cleanup_highmap(void);
 

arch/x86/mm/init_32.c

@@ -45,7 +45,6 @@
 #include <asm/olpc_ofw.h>
 #include <asm/pgalloc.h>
 #include <asm/sections.h>
-#include <asm/paravirt.h>
 #include <asm/setup.h>
 #include <asm/set_memory.h>
 #include <asm/page_types.h>
@@ -74,7 +73,6 @@ static pmd_t * __init one_md_table_init(pgd_t *pgd)
 #ifdef CONFIG_X86_PAE
 	if (!(pgd_val(*pgd) & _PAGE_PRESENT)) {
 		pmd_table = (pmd_t *)alloc_low_page();
-		paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT);
 		set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
 		p4d = p4d_offset(pgd, 0);
 		pud = pud_offset(p4d, 0);
@@ -99,7 +97,6 @@ static pte_t * __init one_page_table_init(pmd_t *pmd)
 	if (!(pmd_val(*pmd) & _PAGE_PRESENT)) {
 		pte_t *page_table = (pte_t *)alloc_low_page();
 
-		paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT);
 		set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
 		BUG_ON(page_table != pte_offset_kernel(pmd, 0));
 	}
@@ -181,12 +178,10 @@ static pte_t *__init page_table_kmap_check(pte_t *pte, pmd_t *pmd,
 			set_pte(newpte + i, pte[i]);
 		*adr = (void *)(((unsigned long)(*adr)) + PAGE_SIZE);
 
-		paravirt_alloc_pte(&init_mm, __pa(newpte) >> PAGE_SHIFT);
 		set_pmd(pmd, __pmd(__pa(newpte)|_PAGE_TABLE));
 		BUG_ON(newpte != pte_offset_kernel(pmd, 0));
 		__flush_tlb_all();
 
-		paravirt_release_pte(__pa(pte) >> PAGE_SHIFT);
 		pte = newpte;
 	}
 	BUG_ON(vaddr < fix_to_virt(FIX_KMAP_BEGIN - 1)
@@ -482,7 +477,6 @@ void __init native_pagetable_init(void)
 				pfn, pmd, __pa(pmd), pte, __pa(pte));
 		pte_clear(NULL, va, pte);
 	}
-	paravirt_alloc_pmd(&init_mm, __pa(base) >> PAGE_SHIFT);
 	paging_init();
 }
 
@@ -491,15 +485,8 @@ void __init native_pagetable_init(void)
  * point, we've been running on some set of pagetables constructed by
  * the boot process.
  *
- * If we're booting on native hardware, this will be a pagetable
- * constructed in arch/x86/kernel/head_32.S.  The root of the
- * pagetable will be swapper_pg_dir.
- *
- * If we're booting paravirtualized under a hypervisor, then there are
- * more options: we may already be running PAE, and the pagetable may
- * or may not be based in swapper_pg_dir.  In any case,
- * paravirt_pagetable_init() will set up swapper_pg_dir
- * appropriately for the rest of the initialization to work.
+ * This will be a pagetable constructed in arch/x86/kernel/head_32.S.
+ * The root of the pagetable will be swapper_pg_dir.
  *
  * In general, pagetable_init() assumes that the pagetable may already
  * be partially populated, and so it avoids stomping on any existing