Re: [RFC PATCH V4 08/17] x86/hyperv: Initialize cpu and memory for sev-snp enlightened guest

From: Tianyu Lan
Date: Sun Apr 16 2023 - 03:22:10 EST


On 4/12/2023 10:39 PM, Michael Kelley (LINUX) wrote:
+ /* Read processor number and memory layout. */
+ processor_count = *(u32 *)__va(EN_SEV_SNP_PROCESSOR_INFO_ADDR);
+ entry = (struct memory_map_entry *)(__va(EN_SEV_SNP_PROCESSOR_INFO_ADDR)
+ + sizeof(struct memory_map_entry));
Why is the first map entry being skipped?

The first entry is populated with processor count by Hyper-V.