diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2017-07-27 08:24:53 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-08-17 15:13:46 +0200 |
| commit | 94171b19c3f1f4d9d4c0e3aaa1aa161def1ec7ea (patch) | |
| tree | 92f29a416e19671ac8fce9a84ed138c115396704 /arch/powerpc/kernel/eeh.c | |
| parent | Linux 4.13-rc2 (diff) | |
| download | linux-94171b19c3f1f4d9d4c0e3aaa1aa161def1ec7ea.tar.xz linux-94171b19c3f1f4d9d4c0e3aaa1aa161def1ec7ea.zip | |
powerpc/mm: Rename find_linux_pte_or_hugepte()
Add newer helpers to make the function usage simpler. It is always
recommended to use find_current_mm_pte() for walking the page table.
If we cannot use find_current_mm_pte(), it should be documented why
the said usage of __find_linux_pte() is safe against a parallel THP
split.
For now we have KVM code using __find_linux_pte(). This is because kvm
code ends up calling __find_linux_pte() in real mode with MSR_EE=0 but
with PACA soft_enabled = 1. We may want to fix that later and make
sure we keep the MSR_EE and PACA soft_enabled in sync. When we do that
we can switch kvm to use find_linux_pte().
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/eeh.c')
| -rw-r--r-- | arch/powerpc/kernel/eeh.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 63992b2d8e15..5e6887c40528 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -44,6 +44,7 @@ #include <asm/machdep.h> #include <asm/ppc-pci.h> #include <asm/rtas.h> +#include <asm/pte-walk.h> /** Overview: @@ -352,8 +353,7 @@ static inline unsigned long eeh_token_to_phys(unsigned long token) * worried about _PAGE_SPLITTING/collapse. Also we will not hit * page table free, because of init_mm. */ - ptep = __find_linux_pte_or_hugepte(init_mm.pgd, token, - NULL, &hugepage_shift); + ptep = find_init_mm_pte(token, &hugepage_shift); if (!ptep) return token; WARN_ON(hugepage_shift); |