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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 guest
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