https://blog.troy-y.org/tags/linux/Recent content in Linux on Troy's BlogHugoenFri, 24 Apr 2026 23:00:00 +0800https://blog.troy-y.org/posts/linux-mm-1-folio-hvo-and-memory-lifecycle/Fri, 24 Apr 2026 23:00:00 +0800https://blog.troy-y.org/posts/linux-mm-1-folio-hvo-and-memory-lifecycle/A deep dive into struct folio, HugeTLB Vmemmap Optimization, reverse mapping, demand paging, and dirty page management in the Linux kernel.https://blog.troy-y.org/posts/linux-mm-0-physical-memory-and-struct-page/Thu, 23 Apr 2026 18:15:51 +0800https://blog.troy-y.org/posts/linux-mm-0-physical-memory-and-struct-page/How the Linux kernel slices RAM into pages, tracks per-page metadata via struct page, and manages page lifetime through reference counting and dirty writeback.https://blog.troy-y.org/posts/pxe-boot-linux-kernel-in-uboot/Fri, 06 Sep 2024 10:33:32 +0800https://blog.troy-y.org/posts/pxe-boot-linux-kernel-in-uboot/How to set up TFTP-based PXE boot in U-Boot to load a Linux kernel and device tree over the network, including the fdt_addr_r pitfall on SpacemiT K1.https://blog.troy-y.org/posts/rockchip-boot-flow/Fri, 23 Aug 2024 12:57:43 +0800https://blog.troy-y.org/posts/rockchip-boot-flow/A walkthrough of the Rockchip SoC boot sequence from BootROM to U-Boot, covering both the open-source TPL/SPL path and the closed-source miniloader path.https://blog.troy-y.org/posts/linux-earlycon-internals/Wed, 03 Jul 2024 18:01:54 +0800https://blog.troy-y.org/posts/linux-earlycon-internals/A deep dive into the Linux earlycon mechanism — how the kernel provides console output during early boot before the real serial driver is initialized, covering both command-line and device-tree paths.