linux-kernel - Re: [PATCH 0/3 v11] add reserved e820 ranges to the kdump kernel e820 table

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Message-ID: <20190607174211.GN20269@zn.tnic>
Date:   Fri, 7 Jun 2019 19:42:11 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     lijiang <lijiang@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kexec@...ts.infradead.org,
        tglx@...utronix.de, mingo@...hat.com, akpm@...ux-foundation.org,
        dave.hansen@...ux.intel.com, luto@...nel.org, peterz@...radead.org,
        x86@...nel.org, hpa@...or.com, dyoung@...hat.com, bhe@...hat.com,
        Thomas.Lendacky@....com
Subject: Re: [PATCH 0/3 v11] add reserved e820 ranges to the kdump kernel
 e820 table

On Tue, May 28, 2019 at 03:30:21PM +0800, lijiang wrote:
> Hi, Boris and Thomas
> 
> Could you give me any suggestions about this patch series? Other reviewers?

So I'm testing this on a box with SME enabled but after loading the
crash kernel, it freezes instead of rebooting. My cmdline is:

 kexec -s -p /boot/vmlinuz-5.2.0-rc3+ --initrd=/boot/initrd.img-5.2.0-rc3+ --command-line="maxcpus=1 root=/dev/sda5 ro debug ignore_loglevel log_buf_len=16M no_console_suspend net.ifnames=0 systemd.log_target=null mem_encrypt=on kvm_amd.sev=1 nr_cpus=1 irqpoll reset_devices vga=normal LANG=en_US.UTF-8 earlyprintk=serial cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 rootflags=nofail acpi_no_memhotplug transparent_hugepage=never disable_cpu_apicid=0"

and the reserved range is:

[    0.000000] Reserving 256MB of memory at 3392MB for crashkernel (System RAM: 16271MB)

I'm wondering if it is related to

https://lkml.kernel.org/r/20190604134952.GC26891@MiWiFi-R3L-srv

Thx.

-- 
Regards/Gruss,
    Boris.

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