From: Yanfei Zhang <zhangyanfei@xxxxxxxxxxxxxx>
Subject: [PATCH v4 2/3] KVM-INTEL: Add new module vmcsinfo-intel to fill VMCSINFO
Date: Wed, 4 Jul 2012 18:05:19 +0800
>
> Besides, this patch also exports vmcs revision identifier via
> /sys/devices/system/cpu/vmcs_id and offsets of fields via
> /sys/devices/system/cpu/vmcs/.
I think /sys/devices/system/cpu/vmcs/id is more natural, which also
belongs to vmcs.
<cut>
> +/*
> + * vmcs field offsets.
> + */
> +static struct vmcsinfo {
> + u32 vmcs_revision_id;
> + u16 vmcs_field_to_offset_table[HOST_RIP + 1];
> +} vmcsinfo;
This is what I said previously. HOST_RIP is 0x00006c16 => 27670. This
means sizeof (struct vmcsinfo) => 55346 bytes == 54 kbytes. But
actually exported fields are only 153, so 4 + 2 * 153 => 310 bytes are
enough.
How about getting the number of attributes from vmcs_attrs array? I
guess this is exactly the number of vmcs fields exported; here 153.
Thanks.
HATAYAMA, Daisuke
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