Changeset 2f098e4

Timestamp:

08/26/2022 12:31:33 PM (20 months ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

xry111/arm64, xry111/arm64-12.0

Children:

cfc0780

Parents:

3d13efb

git-author:

Xi Ruoyao <xry111@…> (08/26/2022 09:53:26 AM)

git-committer:

Xi Ruoyao <xry111@…> (08/26/2022 12:31:33 PM)

Message:

arm64: remove x86_64 specific x2apic kernel features

File:

• chapter10/kernel.xml (modified) (2 diffs)

chapter10/kernel.xml

@@ -151 +151 @@
         [*] Tmpfs POSIX Access Control Lists [CONFIG_TMPFS_POSIX_ACL]</screen>
 
-      <para>Enable some additional features if you are building a 64-bit
-      system.  If you are using menuconfig, enable them in the order of
-      <parameter>CONFIG_PCI_MSI</parameter> first, then
-      <parameter>CONFIG_IRQ_REMAP</parameter>, at last
-      <parameter>CONFIG_X86_X2APIC</parameter> because an option only
-      shows up after its dependencies are selected.</para>
-
-      <screen role="nodump">Processor type and features ---&gt;
-  [*] Support x2apic [CONFIG_X86_X2APIC]
-Memory Management options  ---&gt;
-  [ ] Enable userfaultfd() system call [CONFIG_USERFAULTFD]
-Device Drivers ---&gt;
-  [*] PCI Support ---&gt; [CONFIG_PCI]
-    [*] Message Signaled Interrupts (MSI and MSI-X) [CONFIG_PCI_MSI]
-  [*] IOMMU Hardware Support ---&gt; [CONFIG_IOMMU_SUPPORT]
-    [*] Support for Interrupt Remapping [CONFIG_IRQ_REMAP]</screen>
+      <para>Disable a feature which is security compromised in this kernel
+      release:</para>
+
+      <screen role="nodump">Memory Management options  ---&gt;
+  [ ] Enable userfaultfd() system call [CONFIG_USERFAULTFD]</screen>
     </note>
 
@@ -240 +229 @@
           upon switching to root filesystem just before starting
           init.</para>
-        </listitem>
-      </varlistentry>
-
-      <varlistentry>
-        <term><parameter>Support x2apic</parameter></term>
-        <listitem>
-          <para>Support running the interrupt controller of 64-bit x86
-          processors in x2APIC mode.  x2APIC may be enabled by firmware on
-          64-bit x86 systems, and a kernel without this option enabled will
-          panic on boot if x2APIC is enabled by firmware.  This option has
-          has no effect, but also does no harm if x2APIC is disabled by the
-          firmware.</para>
         </listitem>
       </varlistentry>