| Message ID | 1487498837-12017-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
On Sun, Feb 19, 2017 at 03:37:13PM +0530, Aneesh Kumar K.V wrote: > The check against VSID range is implied when we check task size against > hash and radix pgtable range[1], because we make sure page table range cannot > exceed vsid range. > > [1] BUILD_BUG_ON(TASK_SIZE_USER64 > H_PGTABLE_RANGE); > BUILD_BUG_ON(TASK_SIZE_USER64 > RADIX_PGTABLE_RANGE); > > The check for smaller task size is also removed here, because the follow up > patch will support a tasksize smaller than pgtable range. > > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> > --- Acked-by: Balbir Singh <bsingharora@gmail.com>
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index 93abf8a9813d..f3e856e6ee23 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -69,10 +69,6 @@ #if H_PGTABLE_RANGE > USER_VSID_RANGE #warning Limited user VSID range means pagetable space is wasted #endif - -#if (TASK_SIZE_USER64 < H_PGTABLE_RANGE) && (TASK_SIZE_USER64 < USER_VSID_RANGE) -#warning TASK_SIZE is smaller than it needs to be. -#endif #endif /* CONFIG_PPC_STD_MMU_64 */ phys_addr_t memstart_addr = ~0; diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 8bca7f58afc4..06e23e0b1b81 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -55,11 +55,6 @@ #include "mmu_decl.h" -#ifdef CONFIG_PPC_STD_MMU_64 -#if TASK_SIZE_USER64 > (1UL << (ESID_BITS + SID_SHIFT)) -#error TASK_SIZE_USER64 exceeds user VSID range -#endif -#endif #ifdef CONFIG_PPC_BOOK3S_64 /*
The check against VSID range is implied when we check task size against hash and radix pgtable range[1], because we make sure page table range cannot exceed vsid range. [1] BUILD_BUG_ON(TASK_SIZE_USER64 > H_PGTABLE_RANGE); BUILD_BUG_ON(TASK_SIZE_USER64 > RADIX_PGTABLE_RANGE); The check for smaller task size is also removed here, because the follow up patch will support a tasksize smaller than pgtable range. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> --- arch/powerpc/mm/init_64.c | 4 ---- arch/powerpc/mm/pgtable_64.c | 5 ----- 2 files changed, 9 deletions(-)