linux-kernel - Re: [tip:x86/mm] kdump, proc/vmcore: Enable kdumping encrypted memory with SME enabled

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Message-ID: <710b9d95-2f70-eadf-c4a1-c3dc80ee4ebb@redhat.com>
Date:   Mon, 8 Oct 2018 15:11:56 +0800
From:   lijiang <lijiang@...hat.com>
To:     Borislav Petkov <bp@...e.de>
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org, tglx@...utronix.de,
        hpa@...or.com, linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/mm] kdump, proc/vmcore: Enable kdumping encrypted memory
 with SME enabled

在 2018年10月08日 13:37, Borislav Petkov 写道:
> On Mon, Oct 08, 2018 at 11:30:56AM +0800, lijiang wrote:
>> Yes. As previously mentioned, the correct patch is this one:
> 
> No, that chunk is not needed and I removed it. But I'd leave it as
> an exercise to you to figure out why... or to prove me wrong with a
> .config.
> 
> :-)
> 

I used this ".config" to compile kernel in the attachment, and got a compile error.
Would you like to have a try?

[root@...dl385g10-03 linux]# make ARCH=i386 -j32
  ......
  LD      vmlinux.o
  MODPOST vmlinux.o
fs/proc/vmcore.o：In function ‘read_from_oldmem’：
/home/linux/fs/proc/vmcore.c:127：undefined reference to ‘copy_oldmem_page_encrypted’
make: *** [vmlinux] error 1

Regards,
Lianbo

Download attachment "i386_config.gz" of type "application/gzip" (24793 bytes)