Re: [PATCH V14] mm/debug: Add tests validating architecture page table helpers
From: Christophe Leroy <hidden>
Date: 2020-02-26 14:44:36
Also in:
linux-arch, linux-arm-kernel, linux-mm, linux-riscv, linux-s390, lkml
Le 26/02/2020 à 15:12, Qian Cai a écrit :
On Wed, 2020-02-26 at 09:09 -0500, Qian Cai wrote:quoted
On Mon, 2020-02-17 at 08:47 +0530, Anshuman Khandual wrote: How useful is this that straightly crash the powerpc?And then generate warnings on arm64, [ 146.634626][ T1] debug_vm_pgtable: debug_vm_pgtable: Validating architecture page table helpers [ 146.643995][ T1] ------------[ cut here ]------------ [ 146.649350][ T1] virt_to_phys used for non-linear address: (____ptrval____) (start_kernel+0x0/0x580)
Must be something wrong with the following in debug_vm_pgtable() paddr = __pa(&start_kernel); Is there any explaination why start_kernel() is not in linear memory on ARM64 ? Christophe