diff options
| author | Joerg Roedel <jroedel@suse.de> | 2018-07-18 12:41:08 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-07-20 02:11:46 +0300 |
| commit | 4e8537e4a7a15402b87c424b22c25c9e59681d16 (patch) | |
| tree | 0f1c445b40c2f159e326154b236c70571c42350e /arch/x86 | |
| parent | ba0364e260ab37c02975557dbecc014a26072236 (diff) | |
| download | linux-4e8537e4a7a15402b87c424b22c25c9e59681d16.tar.xz | |
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 <jroedel@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Pavel Machek <pavel@ucw.cz>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: linux-mm@kvack.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: David Laight <David.Laight@aculab.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Eduardo Valentin <eduval@amazon.com>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: aliguori@amazon.com
Cc: daniel.gruss@iaik.tugraz.at
Cc: hughd@google.com
Cc: keescook@google.com
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Waiman Long <llong@redhat.com>
Cc: "David H . Gutteridge" <dhgutteridge@sympatico.ca>
Cc: joro@8bytes.org
Link: https://lkml.kernel.org/r/1531906876-13451-32-git-send-email-joro@8bytes.org
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/mm/dump_pagetables.c | 12 |
1 files 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; |