x86: fix early_ioremap pagetable ops

Some important parts of f6df72e71eba621b2f5c49b3a763116fac748f6e got
dropped along the way, reintroduce them.

Only affects paravirt guests.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 1106b7f..a4897a8 100644 (file)
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -286,7 +286,7 @@ void __init early_ioremap_init(void)
 
        pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
        memset(bm_pte, 0, sizeof(bm_pte));
-       set_pmd(pmd, __pmd(__pa(bm_pte) | _PAGE_TABLE));
+       pmd_populate_kernel(&init_mm, pmd, bm_pte);
 
        /*
         * The boot-ioremap range spans multiple pmds, for which
@@ -316,7 +316,7 @@ void __init early_ioremap_clear(void)
 
        pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
        pmd_clear(pmd);
-       paravirt_release_pt(__pa(pmd) >> PAGE_SHIFT);
+       paravirt_release_pt(__pa(bm_pte) >> PAGE_SHIFT);
        __flush_tlb_all();
 }