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Re: Does reboot clear RAM?

From: Joachim Durchholz
Subject: Re: Does reboot clear RAM?
Date: Sun, 10 Nov 2019 10:14:38 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.2

Do physical machines wipe memory?
They don't on shutdown, and memory tends to retain bits for a while (seconds to hours, depending on temperature and RAM technology). I don't know what RAM chips do if they are reset. Do they even have a reset line nowadays?

Am 09.11.19 um 10:56 schrieb Narcis Garcia via:
In my humble opinion, Qemu should wipe any released RAM area because of
guest shutdown or reboot, same as a physical machine, to guest finds
it's booting in same conditions.

El 8/11/19 a les 23:55, Nachammai Karuppiah ha escrit:
Does qemu clear the physical address on guest reboot?
Qemu is started with kernel parameters, ramoops.mem_address=0x7f00000
ramoops.mem_size=0x100000 but I do see that the memory even outside
this region is not wiped away and is retained after rebooting the

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