Merge branch 'trunk' into xry111/arm64

chapter02/hostreqs.xml

@@ -203,7 +203,7 @@ ver_check()
 
 ver_kernel()
 {
-   kver=$(uname -r | grep -E -o '[0-9\.]+')
+   kver=$(uname -r | grep -E -o '^[0-9\.]+')
    if printf '%s\n' $1 $kver | sort --version-sort --check &>/dev/null
    then 
      printf "OK:    Linux Kernel $kver >= $1\n"; return 0;

chapter10/kernel.xml

@@ -45,6 +45,38 @@
     in the kernel source tree for alternative methods to the way this book
     configures the kernel.</para>
 
+    <important>
+      <para>
+        Building the linux kernel for the first time is one of the most
+        challenging tasks in LFS.  Getting it right depends on the specific
+        hardware for the target system and your specific needs. There are
+        almost 12,000 configuration items that are available for the kernel
+        although only about a third of them are needed for most computers. The
+        LFS editors recommend that users not familiar with this process follow
+        the procedures below fairly closely.  The objective is to get an
+        initial system to a point where you can log in at the command line when
+        you reboot later in <xref linkend="ch-finish-reboot"/>.  At his point
+        optimization and customization is not a goal.
+      </para>
+
+      
+      <para>
+        For general information on kernel configuration see <ulink
+        url="&hints-root;kernel-configuration.txt"/>.  Additional information
+        about configuring and building the kernel can be found at <ulink
+        url="&anduin-sources;/kernel-nutshell/"/>. 
+        These references are a bit
+        dated, but still give a reasonable overview of the process.
+      </para>
+
+      <para>
+        If all else fails, you can ask for help on the <ulink
+        url="https://www.linuxfromscratch.org/mail.html">lfs-support</ulink>
+        mailing list.  Note that subscribing is required in order for the list
+        to avoid spam.
+      </para>
+    </important>
+
     <para>Prepare for compilation by running the following command:</para>
 
 <screen><userinput remap="pre">make mrproper</userinput></screen>
@@ -88,13 +120,6 @@
 
     <!-- Support for compiling a keymap into the kernel is deliberately removed -->
 
-    <para>For general information on kernel configuration see <ulink
-    url="&hints-root;kernel-configuration.txt"/>.  BLFS has some information
-    regarding particular kernel configuration requirements of packages outside
-    of LFS at <ulink
-    url="&blfs-book;longindex.html#kernel-config-index"/>.  Additional
-    information about configuring and building the kernel can be found at
-    <ulink url="http://www.kroah.com/lkn/"/> </para>
 
     <note>
       <para>A good starting place for setting up the kernel configuration is to
@@ -169,6 +194,15 @@ File systems  ---&gt;
    [*] Inotify support for userspace [CONFIG_INOTIFY_USER]
        Pseudo filesystems  ---&gt;
         [*] Tmpfs POSIX Access Control Lists [CONFIG_TMPFS_POSIX_ACL]</screen>
+
+      <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
+      the LFS system won't boot:</para>
+
+      <screen role="nodump">Device Drivers ---&gt;
+  NVME Support ---&gt;
+    &lt;*&gt; NVM Express block device [CONFIG_BLK_DEV_NVME]</screen>
     </note>
 
     <note revision="systemd">
@@ -176,18 +210,18 @@ File systems  ---&gt;
       required, it is highly recommended by the systemd developers.</para>
     </note>
 
-    <para revision="sysv">There are several other options that may be desired
+    <para>There are several other options that may be desired
     depending on the requirements for the system. For a list of options needed
     for BLFS packages, see the <ulink
     url="&lfs-root;blfs/view/&short-version;/longindex.html#kernel-config-index">BLFS
-    Index of Kernel Settings</ulink>
+    Index of Kernel Settings</ulink>.</para>
-    (&lfs-root;blfs/view/&short-version;/longindex.html#kernel-config-index).</para>
 
     <note>
       <para>If your host hardware is using UEFI and you wish to boot the
       LFS system with it, you should adjust some kernel configuration
       following <ulink url="&blfs-book;postlfs/grub-setup.html#uefi-kernel">
-      the BLFS page</ulink>.</para>
+      the BLFS page</ulink> <emphasis role='bold'>even if you'll use the
+      UEFI bootloader from the host distro</emphasis>.</para>
     </note>
 
     <variablelist>