Intel is using microcode file format for IFS test images too.

IFS test images use one of the existing reserved fields in microcode
header to indicate the size of the region in the file allocated for
metadata structures.

In prepration for this, rename first of the existing reserved fields
in microcode header to metasize. In subsequent patches IFS specific
code will make use of this field while parsing IFS images.

Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
---
 arch/x86/include/asm/microcode_intel.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/microcode_intel.h b/arch/x86/include/asm/microcode_intel.h
index 6626744c577b..0ff4545f72d2 100644
--- a/arch/x86/include/asm/microcode_intel.h
+++ b/arch/x86/include/asm/microcode_intel.h
@@ -14,7 +14,8 @@ struct microcode_header_intel {
 	unsigned int            pf;
 	unsigned int            datasize;
 	unsigned int            totalsize;
-	unsigned int            reserved[3];
+	unsigned int            metasize;
+	unsigned int            reserved[2];
 };
 
 struct microcode_intel {
-- 
2.25.1

On Mon, Nov 07, 2022 at 02:53:16PM -0800, Jithu Joseph wrote:
> Intel is using microcode file format for IFS test images too.
> 
> IFS test images use one of the existing reserved fields in microcode
> header to indicate the size of the region in the file allocated for
> metadata structures.
> 
> In prepration for this, rename first of the existing reserved fields

Unknown word [prepration] in commit message.
Suggestions: ['preparation', 'peroration', 'prep ration', 'prep-ration', 'preparations', 'reparation', 'perspiration', "preparation's", 'proportion']

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

On 11/7/2022 2:53 PM, Jithu Joseph wrote:
> Intel is using microcode file format for IFS test images too.
> 
> IFS test images use one of the existing reserved fields in microcode
> header to indicate the size of the region in the file allocated for
> metadata structures.
> 
> In prepration for this, rename first of the existing reserved fields
> in microcode header to metasize. In subsequent patches IFS specific

Nit:
s/In subsequent patches/Upcoming

> code will make use of this field while parsing IFS images.
> 
> Reviewed-by: Tony Luck <tony.luck@intel.com>
> Reviewed-by: Ashok Raj <ashok.raj@intel.com>
> Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>

Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>