Messages in this thread | | | From | "Manfred Spraul" <> | Subject | Re: 2.3.40 blows away on shm swap test | Date | Sat, 22 Jan 2000 02:19:51 +0100 |
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From: "Christoph Rohland" <hans-christoph.rohland@sap.com> > Code; c0114d64 <flush_tlb_all_ipi+18/58> <===== > 0: 8b 52 0c movl 0xc(%edx),%edx <===== > Code; c0114d67 <flush_tlb_all_ipi+1b/58> > 3: 81 c2 00 00 00 40 addl $0x40000000,%edx
That's Ingo's new __flush_tlb_all() optimization: he tries to avoid loading from %%cr3 by loading the information from current->active_mm->pgd.
Ingo, could you undo that change? current->active_mm may be NULL in the middle of a task switch [between mmdrop() and switch_to() in schedule()]
-- Manfred
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