linux-kernel - Regression: 4.14.x x86/mm: Encrypt the initrd earlier for BSP microcode update

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Date:   Wed, 28 Mar 2018 14:54:08 +1100
From:   Steven Haigh <netwiz@....id.au>
To:     linux-kernel <linux-kernel@...r.kernel.org>
Subject: Regression: 4.14.x x86/mm: Encrypt the initrd earlier for BSP microcode update

Hi all,

After the following patch, we are unable to build the 4.14 tree with EL6 - 
which uses gcc 4.4.7

The failure logs are as follows:
BUILDSTDERR: arch/x86/kernel/head64.c: In function 'copy_bootdata':
BUILDSTDERR: ./arch/x86/include/asm/mem_encrypt.h:59: sorry, unimplemented: 
inlining failed in call to 'sme_map_bootdata': function not inlinable
BUILDSTDERR: arch/x86/kernel/head64.c:294: sorry, unimplemented: called from 
here
BUILDSTDERR: ./arch/x86/include/asm/mem_encrypt.h:60: sorry, unimplemented: 
inlining failed in call to 'sme_unmap_bootdata': function not inlinable
BUILDSTDERR: arch/x86/kernel/head64.c:310: sorry, unimplemented: called from 
here

Patch in question:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/
commit/arch/x86/include/asm/mem_encrypt.h?
h=linux-4.14.y&id=e0f82cbde41353ddf63935175583ceb5580cce87

I can confirm that this builds fine with EL7.

-- 
Steven Haigh

📧 netwiz@....id.au       💻 https://www.crc.id.au
📞 +61 (3) 9001 6090    📱 0412 935 897
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