Re: [PATCH v4 1/3] vmalloc: Choose a better start address in vm_area_register_early()

[Catalin Marinas]

On Fri, Sep 10, 2021 at 01:33:52PM +0800, Kefeng Wang wrote:
> There are some fixed locations in the vmalloc area be reserved
> in ARM(see iotable_init()) and ARM64(see map_kernel()), but for
> pcpu_page_first_chunk(), it calls vm_area_register_early() and
> choose VMALLOC_START as the start address of vmap area which
> could be conflicted with above address, then could trigger a
> BUG_ON in vm_area_add_early().
> 
> Let's choose a suit start address by traversing the vmlist.
> 
> Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>

Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>