[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v4 1/4] x86/HVM: update the start info structure layout
>>> On 16.02.16 at 22:26, <boris.ostrovsky@xxxxxxxxxx> wrote: > On 02/16/2016 12:37 PM, Roger Pau Monne wrote: >> diff --git a/xen/include/public/xen.h b/xen/include/public/xen.h >> index 7b629b1..6ba060f 100644 >> --- a/xen/include/public/xen.h >> +++ b/xen/include/public/xen.h >> @@ -787,25 +787,46 @@ typedef struct start_info start_info_t; >> /* >> * Start of day structure passed to PVH guests in %ebx. >> * >> - * NOTE: nothing will be loaded at physical address 0, so >> - * a 0 value in any of the address fields should be treated >> - * as not present. >> + * NOTE: nothing will be loaded at physical address 0, so a 0 value in any >> + * of the address fields should be treated as not present. >> + * >> + * 0 +----------------+ >> + * | magic | Contains the magic value HVM_START_MAGIC_VALUE >> + * | | ("xEn3" with the 0x80 bit of the "E" set). >> + * 4 +----------------+ >> + * | version | Version of this structure. Current version is 0. >> New >> + * | | versions are guaranteed to be backwards-compatible. > > #define XEN_HVM_START_INFO_VERSION 0 What would that buy us? Once it gets bumped to 1, consumers would need to check against literal zero anyway. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |