3rd-party/linux-kernel-module-cheat
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link to some SO questions

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Ciro Santilli 六四事件 法轮功
2020-10-27 00:00:00 +00:00
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README.adoc
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@@ -4181,7 +4181,10 @@ Example:
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Running dynamically linked executables in QEMU requires pointing it to the root filesystem with the `-L` option so that it can find the dynamic linker and shared libraries.
Running dynamically linked executables in QEMU requires pointing it to the root filesystem with the `-L` option so that it can find the dynamic linker and shared libraries, see also:
* https://stackoverflow.com/questions/54802670/using-dynamic-linker-with-qemu-arm/64551293#64551293
* https://stackoverflow.com/questions/khow-to-gdb-step-debug-a-dynamically-linked-executable-in-qemu-user-mode
We pass `-L` by default, so everything just works.
@@ -4350,7 +4353,10 @@ TODO: how to escape spaces on the command line arguments?
==== gem5 dynamic linked executables in syscall emulation
Support for dynamic linking was added in November 2019: https://stackoverflow.com/questions/50542222/how-to-run-a-dynamically-linked-executable-syscall-emulation-mode-se-py-in-gem5/50696098#50696098
Support for dynamic linking was added in November 2019:
* https://stackoverflow.com/questions/50542222/how-to-run-a-dynamically-linked-executable-syscall-emulation-mode-se-py-in-gem5/50696098#50696098
* https://stackoverflow.com/questions/64547306/cannot-open-lib-ld-linux-aarch64-so-1-in-qemu-or-gem5/64551313#64551313
Note that as shown at xref:benchmark-emulators-on-userland-executables[xrefstyle=full], the dynamic version runs 200x more instructions, which might have an impact on smaller simulations in detailed CPUs.
@@ -7287,7 +7293,7 @@ Bibliography:
* https://askubuntu.com/questions/41930/kernel-panic-not-syncing-vfs-unable-to-mount-root-fs-on-unknown-block0-0/1048477#1048477
* https://unix.stackexchange.com/questions/414655/not-syncing-vfs-unable-to-mount-root-fs-on-unknown-block0-0/603197#603197
* https://stackoverflow.com/questions/63277677/i-meet-a-problem-when-i-encountered-in-the-fs-mode-of-running-gem5/63278487#63278487
* https://stackoverflow.com/questions/63277677/i-meet-a-problem-when-i-encountered-in-the-fs-mode-of-running-gem5/63278487#63278487 summary only
=== Pseudo filesystems
@@ -10191,6 +10197,7 @@ TODO exercise DMA on the kernel module. The `edu` hardware model has that featur
* https://stackoverflow.com/questions/17913679/how-to-instantiate-and-use-a-dma-driver-linux-module
* https://stackoverflow.com/questions/32592734/are-there-any-dma-driver-example-pcie-and-fpga/44716747#44716747
* https://stackoverflow.com/questions/62831327/add-memory-device-to-qemu
* https://stackoverflow.com/questions/64539528/qemu-pci-dma-read-and-pci-dma-write-does-not-work
===== Manipulate PCI registers directly