在 2018年07月20日 15:32, Borislav Petkov 写道: > On Fri, Jul 20, 2018 at 01:23:04PM +0800, Dave Young wrote: >>> Here, it doesn't need to dump MMIO space of the previous kernel, when the >>> kdump kernel boot, the MMIO address will be remapped in decryption manners, >>> but the MMIO address don't belong to the range of the crash reserved memory, >>> for the kdump kernel, the MMIO space(address) and IOMMU device >>> table(address) >>> are outside address, whereas, the IOMMU device table is encrypted in the >>> first >>> kernel, the kdump kernel will need to copy the content of IOMMU device table >>> from the first kernel when the kdump kernel boot, so the IOMMU device table >>> will >>> be remapped in encryption manners. > > -ENOFCKINGPARSE > > I believe you're the only one who understands that humongous sentence.Sorry > for this.
> How about using a fullstop from time to time. And WTF is "encryption > manners"? > >>> So some of them require to be remapped in encryption manners, and >>> some(address) >>> require to be remapped in decryption manners. > >> There could be some misunderstanding here. > > Hell yeah there's a misunderstanding! > > Can you folks first relax, sit down and explain the whole problem in > *plain* English using *simple* sentences. *Not* like the unparseable > mess above. Use simple, declaratory sentences and don't even try to > sound fancy: > > "The first kernel boots. It's memory is encrypted... Now, the second > kernel boots. It must do A because of B. In order to do A, it needs to > do C. Because D..." > > And so on. Explain what the problem is first. Then explain the proposed > solution. Explain *why* it needs to be done this way. > > When you've written your explanation, try to read it as someone who > doesn't know kdump and *think* hard whether your explanation makes > sense. If it doesn't, fix it and read it again. Rinse and repeat. Until > it is clear to unenlightened readers too. > Thanks for your advice, I will rewrite the log and send them again. > It is about time this hurried throwing of half-baked patches at > maintainers and seeing what sticks, stops! > _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
