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Commit b6fbb669 authored by Ian Campbell's avatar Ian Campbell Committed by Thomas Gleixner
Browse files

x86: fix early_ioremap pagetable ops 



Some important parts of f6df72e7 got
dropped along the way, reintroduce them.

Only affects paravirt guests.

Signed-off-by: default avatarIan Campbell <ijc@hellion.org.uk>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 551889a6

arch/x86/mm/ioremap.c

+2 −2
Original line number Diff line number Diff line
@@ -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();

}