[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] x86/boot: Clean up the trampoline transition into Long mode
On Thu, Jan 02, 2020 at 02:59:53PM +0000, Andrew Cooper wrote: > The jmp after setting %cr0 is redundant with the following ljmp. > > The CPUID to protect the jump to higher mappings was inserted due to an > abundance of caution/paranoia before Spectre was public. There is not a > matching protection in the S3 resume path, and there is nothing > interesting in memory at this point. What do you mean by "there is nothing interesting in memory" here? As far as I can tell idel page table has been loaded. During AP bring-up it contains runtime data, no? Wei. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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