On Tue, Oct 24, 2017 at 05:21:43PM +0200, Paolo Bonzini wrote:
> vmalloc is not able to provide allocations with alignment greater than
> PAGE_SIZE, so avoid them.
>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> ---
> lib/arm/asm/thread_info.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/arm/asm/thread_info.h b/lib/arm/asm/thread_info.h
> index 9f0c14d..c2ecebb 100644
> --- a/lib/arm/asm/thread_info.h
> +++ b/lib/arm/asm/thread_info.h
> @@ -38,7 +38,7 @@
>
> static inline void *thread_stack_alloc(void)
> {
> - void *sp = memalign(THREAD_SIZE, THREAD_SIZE);
> + void *sp = memalign(PAGE_SIZE, THREAD_SIZE);
> return sp + THREAD_START_SP;
> }
>
This reduces all the secondary cpu's stacks on arm from 16K to 4K.
Also, THREAD_SIZE is page aligned, so I'm wondering what's breaking
here?
Thanks,
drew
