Le 02/02/2020 à 12:26, Qian Cai a écrit :
On Jan 30, 2020, at 9:13 AM, Christophe Leroy <christophe.leroy@xxxxxx> wrote:
config DEBUG_VM_PGTABLE
bool "Debug arch page table for semantics compliance" if ARCH_HAS_DEBUG_VM_PGTABLE || EXPERT
depends on MMU
default 'n' if !ARCH_HAS_DEBUG_VM_PGTABLE
default 'y' if DEBUG_VM
Does it really necessary to potentially force all bots to run this? Syzbot, kernel test robot etc? Does it ever pay off for all their machine times there?
Machine time ?
On a 32 bits powerpc running at 132 MHz, the tests takes less than 10ms.
Is it worth taking the risk of not detecting faults by not selecting it
by default ?
[ 5.656916] debug_vm_pgtable: debug_vm_pgtable: Validating
architecture page table helpers
[ 5.665661] debug_vm_pgtable: debug_vm_pgtable: Validated
architecture page table helpers
Christophe
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