Re: [PATCH] x86/mm: Disable INVLPGB when PTI is enabled

On Tue, 2025-06-10 at 15:24 -0700, Dave Hansen wrote:

Disable INVLPGB if PTI is enabled. Avoid overrunning the small bitmap.

Note: this will be fixed up properly by making the bitmap bigger. For now, just avoid the mostly theoretical bug.

Does that mean the patch to make the bitmap bigger is a dependency that needs to be in place before the RAR code (hoping to send out v4 later this week) can be merged?

Signed-off-by: Dave Hansen dave.hansen@linux.intel.com Fixes: 4afeb0ed1753 ("x86/mm: Enable broadcast TLB invalidation for multi-threaded processes")

Acked-by: Rik van Riel riel@surriel.com