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SubjectRe: [RFC PATCH 11/37] x86/mm: attempt speculative mm faults first
On Tue, Apr 06, 2021 at 06:44:36PM -0700, Michel Lespinasse wrote:
> --- a/arch/x86/mm/fault.c
> +++ b/arch/x86/mm/fault.c
> @@ -1219,6 +1219,8 @@ void do_user_addr_fault(struct pt_regs *regs,
> struct mm_struct *mm;
> vm_fault_t fault;
> unsigned int flags = FAULT_FLAG_DEFAULT;
> + struct vm_area_struct pvma;

That's 200 bytes on-stack... I suppose that's just about acceptible, but
perhaps we need a comment in struct vm_area_struct to make people aware
this things lives on-stack and size really is an issue now.

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