On 5/17/21 6:55 AM, Aneesh Kumar K.V wrote:
Guenter Roeck <linux@xxxxxxxxxxxx> writes:
On 5/17/21 1:40 AM, Aneesh Kumar K.V wrote:
On 5/15/21 10:05 PM, Guenter Roeck wrote:
On Thu, Apr 22, 2021 at 11:13:19AM +0530, Aneesh Kumar K.V wrote:
...
extern void radix__local_flush_all_mm(struct mm_struct *mm);
diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush.h b/arch/powerpc/include/asm/book3s/64/tlbflush.h
index 215973b4cb26..f9f8a3a264f7 100644
--- a/arch/powerpc/include/asm/book3s/64/tlbflush.h
+++ b/arch/powerpc/include/asm/book3s/64/tlbflush.h
@@ -45,13 +45,30 @@ static inline void tlbiel_all_lpid(bool radix)
hash__tlbiel_all(TLB_INVAL_SCOPE_LPID);
}
+static inline void flush_pmd_tlb_pwc_range(struct vm_area_struct *vma,
^^^^
+ unsigned long start,
+ unsigned long end,
+ bool flush_pwc)
+{
+ if (radix_enabled())
+ return radix__flush_pmd_tlb_range(vma, start, end, flush_pwc);
+ return hash__flush_tlb_range(vma, start, end);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+}
In this specific case we won't have build errors because,
static inline void hash__flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
Sorry, you completely lost me.
Building parisc:allnoconfig ... failed
--------------
Error log:
In file included from arch/parisc/include/asm/cacheflush.h:7,
from include/linux/highmem.h:12,
from include/linux/pagemap.h:11,
from include/linux/ksm.h:13,
from mm/mremap.c:14:
mm/mremap.c: In function 'flush_pte_tlb_pwc_range':
arch/parisc/include/asm/tlbflush.h:20:2: error: 'return' with a value, in function returning void
As replied here
https://lore.kernel.org/mm-commits/8eedb441-a612-1ec8-8bf7-b40184de9f6f@xxxxxxxxxxxxx/
That was the generic header change in the patch. I was commenting about the
ppc64 specific change causing build failures.
Ah, sorry. I wasn't aware that the following is valid C code
void f1()
{
return f2();
^^^^^^
}
as long as f2() is void as well. Confusing, but we live and learn.
Guenter
