Commit-ID: 23b772883d1ddcf7fdf883614b88b2a6205db4da
Gitweb: https://git.kernel.org/tip/23b772883d1ddcf7fdf883614b88b2a6205db4da
Author: Joerg Roedel <jroedel@xxxxxxx>
AuthorDate: Wed, 18 Jul 2018 11:40:52 +0200
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Fri, 20 Jul 2018 01:11:40 +0200
x86/pgtable: Rename pti_set_user_pgd() to pti_set_user_pgtbl()
The way page-table folding is implemented on 32 bit, these functions are
not only setting, but also PUDs and even PMDs. Give the function a more
generic name to reflect that.
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Tested-by: Pavel Machek <pavel@xxxxxx>
Cc: "H . Peter Anvin" <hpa@xxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Jiri Kosina <jkosina@xxxxxxx>
Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Cc: Brian Gerst <brgerst@xxxxxxxxx>
Cc: David Laight <David.Laight@xxxxxxxxxx>
Cc: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
Cc: Eduardo Valentin <eduval@xxxxxxxxxx>
Cc: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: aliguori@xxxxxxxxxx
Cc: daniel.gruss@xxxxxxxxxxxxxx
Cc: hughd@xxxxxxxxxx
Cc: keescook@xxxxxxxxxx
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Waiman Long <llong@xxxxxxxxxx>
Cc: "David H . Gutteridge" <dhgutteridge@xxxxxxxxxxxx>
Cc: joro@xxxxxxxxxx
Link: https://lkml.kernel.org/r/1531906876-13451-16-git-send-email-joro@xxxxxxxxxx
---
arch/x86/include/asm/pgtable_64.h | 12 ++++++------
arch/x86/mm/pti.c | 2 +-
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index 3c5385f9a88f..9406c4fe1d38 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -196,21 +196,21 @@ static inline bool pgdp_maps_userspace(void *__ptr)
}
#ifdef CONFIG_PAGE_TABLE_ISOLATION
-pgd_t __pti_set_user_pgd(pgd_t *pgdp, pgd_t pgd);
+pgd_t __pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd);
/*
* Take a PGD location (pgdp) and a pgd value that needs to be set there.
* Populates the user and returns the resulting PGD that must be set in
* the kernel copy of the page tables.
*/
-static inline pgd_t pti_set_user_pgd(pgd_t *pgdp, pgd_t pgd)
+static inline pgd_t pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd)
{
if (!static_cpu_has(X86_FEATURE_PTI))
return pgd;
- return __pti_set_user_pgd(pgdp, pgd);
+ return __pti_set_user_pgtbl(pgdp, pgd);
}
#else
-static inline pgd_t pti_set_user_pgd(pgd_t *pgdp, pgd_t pgd)
+static inline pgd_t pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd)
{
return pgd;
}
@@ -226,7 +226,7 @@ static inline void native_set_p4d(p4d_t *p4dp, p4d_t p4d)
}
pgd = native_make_pgd(native_p4d_val(p4d));
- pgd = pti_set_user_pgd((pgd_t *)p4dp, pgd);
+ pgd = pti_set_user_pgtbl((pgd_t *)p4dp, pgd);
*p4dp = native_make_p4d(native_pgd_val(pgd));
}
@@ -237,7 +237,7 @@ static inline void native_p4d_clear(p4d_t *p4d)
static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd)
{
- *pgdp = pti_set_user_pgd(pgdp, pgd);
+ *pgdp = pti_set_user_pgtbl(pgdp, pgd);
}
static inline void native_pgd_clear(pgd_t *pgd)
diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c
index 9277e9ba92b5..71fba17c9d7c 100644
--- a/arch/x86/mm/pti.c
+++ b/arch/x86/mm/pti.c
@@ -117,7 +117,7 @@ enable:
setup_force_cpu_cap(X86_FEATURE_PTI);
}
-pgd_t __pti_set_user_pgd(pgd_t *pgdp, pgd_t pgd)
+pgd_t __pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd)
{
/*
* Changes to the high (kernel) portion of the kernelmode page
--
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