kernel - What is memmap and how do you use it? - Ask Ubuntu
Apr 13, 2017 · I have a faulty memory with a consistent offset, and according to UnixSE, I could use memmap to solve this problem by having the kernel avoiding this certain offset via memmap: https://unix.
How do I tell ubuntu not to use certain memory addresses?
Apr 25, 2017 · memmap=16K$0x22a898000 Which reserves (this is what the $ is for) 16 KiB of memory starting at physical address 0x22a898000 . I did this by editing /etc/default/grub and adding memmap=16K\\\$0x22a898000 at the end of the GRUB_CMDLINE_LINUX_DEFAULT variable in that file, and then running sudo update-grub .
memmap boot parameters not getting set correctly - Ask Ubuntu
Oct 12, 2023 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
How to block Ubuntu from using certain memory area?
Oct 15, 2022 · someone did a comment about using memmap instead of GRUB_BADRAM. To convert from BADRAM to memmap you do the following: You have the [address,mask]: 0x00000005A00C000,0xFFFFFFFFFFFFE000; You take the mask FFE000 and flip all the bits in FFE000 ^ FFFFFF with a xor calculator. This gives us the FFE000 ^ FFFFFF = 001FFF.
memory - kernel mem parameter - Ask Ubuntu
As a last resort to my question, I am yet to try the mem parameter of kernel to force it to use the specified amount of RAM. Short Summary - I can only see 3.2GB RAM on a 64bit OS and am not sure i...
dmesg - speedup boot process - Ask Ubuntu
Jan 12, 2020 · I often have to reboot my laptop due to development stuff, so I try to minimize bootup time on Ubuntu 19.10 This is the output of dmesg # dmesg ... [ 0.017283] On node 0 totalpages: 10414141 ...
How to view the memory map of a running process? - Ask Ubuntu
Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
How to fix TPM2 ACPI table does not define a memory resource
May 4, 2018 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
How do I allocate more memory to the boot process?
Sep 23, 2022 · Normally when I boot into Ubuntu, everything works perfectly fine. Today, I enabled Thunderbolt support in my BIOS. After this, when I booted into Ubuntu from GRUB, I immediately got an error: "
How to install Ubuntu on a laptop with soldered RAM module that …
Mar 31, 2020 · memmap=64K\$0x18690000,3G\$4G Alternatively, specify valid regions with @ instead of $ . This may be required, as it's not absolutely clear from the docs that multiple regions may be specified for exclusion (comma-separated), while this is explicitly described for inclusion.