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SubjectRe: [PATCH] l1tf: drop the swap storage limit restriction when l1tf=off
On Tue, Nov 13, 2018 at 07:49:10PM +0100, Michal Hocko wrote:
> From: Michal Hocko <>
> Swap storage is restricted to max_swapfile_size (~16TB on x86_64)
> whenever the system is deemed affected by L1TF vulnerability. Even
> though the limit is quite high for most deployments it seems to be
> too restrictive for deployments which are willing to live with the
> mitigation disabled.
> We have a customer to deploy 8x 6,4TB PCIe/NVMe SSD swap devices
> which is clearly out of the limit.
> Drop the swap restriction when l1tf=off is specified. It also doesn't
> make much sense to warn about too much memory for the l1tf mitigation
> when it is forcefully disabled by the administrator.

Reviewed-by: Andi Kleen <>


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