Messages in this thread Patch in this message | | | Date | Mon, 27 Nov 2017 21:34:20 +0100 | From | Thomas Gleixner <> | Subject | [patch 4/4] x86/mm/dump_pagetables: Use helper to get the shadow PGD |
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Use kernel_to_shadow_pgdp() instead of open coding it.
Fixes: ca646ac417b8 ("x86/mm/debug_pagetables: Allow dumping current pagetables") Fixes: 04bafab4b2ee ("x86/mm/dump_pagetables: Check Kaiser shadow page table for WX pages") Requested-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- arch/x86/mm/dump_pagetables.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -504,8 +504,10 @@ void ptdump_walk_pgd_level(struct seq_fi void ptdump_walk_pgd_level_debugfs(struct seq_file *m, pgd_t *pgd, bool shadow) { +#ifdef CONFIG_KAISER if (shadow && kaiser_enabled) - pgd += PTRS_PER_PGD; + pgd = kernel_to_shadow_pgdp(pgd); +#endif ptdump_walk_pgd_level_core(m, pgd, false, false); } EXPORT_SYMBOL_GPL(ptdump_walk_pgd_level_debugfs); @@ -518,7 +520,7 @@ void ptdump_walk_shadow_pgd_level_checkw if (!kaiser_enabled) return; pr_info("x86/mm: Checking shadow page tables\n"); - pgd += PTRS_PER_PGD; + pgd = kernel_to_shadow_pgdp(pgd); ptdump_walk_pgd_level_core(NULL, pgd, true, false); #endif }
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