On Sun, Jan 18, 2015 at 12:45 PM, Alexander van Heukelum <heuke...@fastmail.fm> wrote: > KERNEL_STACK_OFFSET is the offset from the top of the kernel stack > page to the value of the kernel_stack percpu variable. This patch > changes KERNEL_STACK_OFFSET to configure a reserved space of 16 > bytes above the user ptregs frame. KERNEL_STACK_OFFSET must be > set to a multiple of 16 bytes due to the automatic stack alignment > of interrupts, traps, and exceptions on x86_64.
I propose to set kernel_stack percpu variable to point to the top of kernel stack (obvious, isn't it?) and eliminate KERNEL_STACK_OFFSET altogether. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
