Commit-ID: 4e8537e4a7a15402b87c424b22c25c9e59681d16 Gitweb: https://git.kernel.org/tip/4e8537e4a7a15402b87c424b22c25c9e59681d16 Author: Joerg Roedel <[email protected]> AuthorDate: Wed, 18 Jul 2018 11:41:08 +0200 Committer: Thomas Gleixner <[email protected]> CommitDate: Fri, 20 Jul 2018 01:11:46 +0200
x86/mm/dump_pagetables: Define INIT_PGD Define INIT_PGD to point to the correct initial page-table for 32 and 64 bit and use it where needed. This fixes the build on 32 bit with CONFIG_PAGE_TABLE_ISOLATION enabled. Signed-off-by: Joerg Roedel <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Pavel Machek <[email protected]> Cc: "H . Peter Anvin" <[email protected]> Cc: [email protected] Cc: Linus Torvalds <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Juergen Gross <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Jiri Kosina <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: Brian Gerst <[email protected]> Cc: David Laight <[email protected]> Cc: Denys Vlasenko <[email protected]> Cc: Eduardo Valentin <[email protected]> Cc: Greg KH <[email protected]> Cc: Will Deacon <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: Andrea Arcangeli <[email protected]> Cc: Waiman Long <[email protected]> Cc: "David H . Gutteridge" <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/[email protected] --- arch/x86/mm/dump_pagetables.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c index 2f3c9196b834..e6fd0cdef9ad 100644 --- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -111,6 +111,8 @@ static struct addr_marker address_markers[] = { [END_OF_SPACE_NR] = { -1, NULL } }; +#define INIT_PGD ((pgd_t *) &init_top_pgt) + #else /* CONFIG_X86_64 */ enum address_markers_idx { @@ -139,6 +141,8 @@ static struct addr_marker address_markers[] = { [END_OF_SPACE_NR] = { -1, NULL } }; +#define INIT_PGD (swapper_pg_dir) + #endif /* !CONFIG_X86_64 */ /* Multipliers for offsets within the PTEs */ @@ -496,11 +500,7 @@ static inline bool is_hypervisor_range(int idx) static void ptdump_walk_pgd_level_core(struct seq_file *m, pgd_t *pgd, bool checkwx, bool dmesg) { -#ifdef CONFIG_X86_64 - pgd_t *start = (pgd_t *) &init_top_pgt; -#else - pgd_t *start = swapper_pg_dir; -#endif + pgd_t *start = INIT_PGD; pgprotval_t prot, eff; int i; struct pg_state st = {}; @@ -566,7 +566,7 @@ EXPORT_SYMBOL_GPL(ptdump_walk_pgd_level_debugfs); static void ptdump_walk_user_pgd_level_checkwx(void) { #ifdef CONFIG_PAGE_TABLE_ISOLATION - pgd_t *pgd = (pgd_t *) &init_top_pgt; + pgd_t *pgd = INIT_PGD; if (!static_cpu_has(X86_FEATURE_PTI)) return;
