[lfs] branch trunk updated: kernel: add HIGHMEM4G for 32-bit

This is an automated email from the git hooks/post-receive script.

git pushed a commit to branch trunk
in repository lfs.

The following commit(s) were added to refs/heads/trunk by this push:
     new e3bd8b4a0 kernel: add HIGHMEM4G for 32-bit
e3bd8b4a0 is described below

commit e3bd8b4a059a985342c762ee3e333360c8e28078
Author: Xi Ruoyao <[email protected]>
AuthorDate: Thu Jan 15 14:54:15 2026 +0800

    kernel: add HIGHMEM4G for 32-bit
    
    Without this in 32-bit kernel you can only use ~800 MiB of RAM.  Sigh.
---
 chapter10/kernel.xml            | 7 +++++++
 chapter10/kernel/highmem.toml   | 1 +
 chapter10/kernel/highmem.xml    | 7 +++++++
 chapter10/kernel/kernel.version | 2 +-
 chapter10/kernel/systemd.xml    | 3 +--
 5 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/chapter10/kernel.xml b/chapter10/kernel.xml
index 0c4739167..66e58f46b 100644
--- a/chapter10/kernel.xml
+++ b/chapter10/kernel.xml
@@ -151,6 +151,13 @@
       <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
         href="kernel/x2apic.xml"/>
 
+      <para>If you are building a 32-bit system,
+      adjust the configuration so the kernel will
+      be able to use up to 4GB physical RAM:</para>
+
+      <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+        href="kernel/highmem.xml"/>
+
       <para>If the partition for the LFS system is in a NVME SSD (i. e. the
       device node for the partition is <filename>/dev/nvme*</filename>
       instead of <filename>/dev/sd*</filename>), enable NVME support or
diff --git a/chapter10/kernel/highmem.toml b/chapter10/kernel/highmem.toml
new file mode 100644
index 000000000..93e66af3b
--- /dev/null
+++ b/chapter10/kernel/highmem.toml
@@ -0,0 +1 @@
+HIGHMEM4G='*'
diff --git a/chapter10/kernel/highmem.xml b/chapter10/kernel/highmem.xml
new file mode 100644
index 000000000..03b228e59
--- /dev/null
+++ b/chapter10/kernel/highmem.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE note PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
+<!-- Automatically generated by kernel-config.py
+     DO NOT EDIT! -->
+<screen role="nodump"><emphasis role='blue'>P</emphasis>rocessor type and features ---&gt;
+  [*] H<emphasis role='blue'>i</emphasis>gh Memory Support                                            [HIGHMEM4G]</screen>
diff --git a/chapter10/kernel/kernel.version b/chapter10/kernel/kernel.version
index 954ea4957..ab1d61511 100644
--- a/chapter10/kernel/kernel.version
+++ b/chapter10/kernel/kernel.version
@@ -1 +1 @@
-6.16.1
+6.18.2
diff --git a/chapter10/kernel/systemd.xml b/chapter10/kernel/systemd.xml
index 5a598b764..35d48dd16 100644
--- a/chapter10/kernel/systemd.xml
+++ b/chapter10/kernel/systemd.xml
@@ -38,8 +38,7 @@
                                                            ...  [DEVTMPFS_MOUNT]
     <emphasis role='blue'>F</emphasis>irmware loader ---&gt;
       &lt; /*&gt; <emphasis role='blue'>F</emphasis>irmware loading facility                                [FW_LOADER]
-      [ ]     <emphasis role='blue'>E</emphasis>nable the firmware sysfs fallback mechanism
-                                                    ...  [FW_LOADER_USER_HELPER]
+      [ ]   <emphasis role='blue'>E</emphasis>nable the firmware sysfs fallback mechanism [FW_LOADER_USER_HELPER]
   <emphasis role='blue'>F</emphasis>irmware Drivers ---&gt;
     [*] <emphasis role='blue'>E</emphasis>xport DMI identification via sysfs to userspace                 [DMIID]
     [*] M<emphasis role='blue'>a</emphasis>rk VGA/VBE/EFI FB as generic system framebuffer       [SYSFB_SIMPLEFB]

-- 
To stop receiving notification emails like this one, please contact
the administrator of this repository.

-- 
http://lists.linuxfromscratch.org/sympa/info/lfs-book
Unsubscribe: See the above information page