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| author | Ingo Molnar | 2018-04-12 09:42:34 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2018-04-12 09:42:34 +0200 |
| commit | ef389b734691cdc8beb009dd402135dcdcb86a56 (patch) | |
| tree | 9523a37db93cb7c7874a5f18b4d9a7014898b814 /Documentation/x86 | |
| parent | x86/apic: Fix signedness bug in APIC ID validity checks (diff) | |
| parent | syscalls/x86: Adapt syscall_wrapper.h to the new syscall stub naming convention (diff) | |
| download | kernel-qcow2-linux-ef389b734691cdc8beb009dd402135dcdcb86a56.tar.gz kernel-qcow2-linux-ef389b734691cdc8beb009dd402135dcdcb86a56.tar.xz kernel-qcow2-linux-ef389b734691cdc8beb009dd402135dcdcb86a56.zip | |
Merge branch 'WIP.x86/asm' into x86/urgent, because the topic is ready
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/x86')
| -rw-r--r-- | Documentation/x86/x86_64/5level-paging.txt | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/Documentation/x86/x86_64/5level-paging.txt b/Documentation/x86/x86_64/5level-paging.txt index 087251a0d99c..2432a5ef86d9 100644 --- a/Documentation/x86/x86_64/5level-paging.txt +++ b/Documentation/x86/x86_64/5level-paging.txt @@ -20,12 +20,9 @@ Documentation/x86/x86_64/mm.txt CONFIG_X86_5LEVEL=y enables the feature. -So far, a kernel compiled with the option enabled will be able to boot -only on machines that supports the feature -- see for 'la57' flag in -/proc/cpuinfo. - -The plan is to implement boot-time switching between 4- and 5-level paging -in the future. +Kernel with CONFIG_X86_5LEVEL=y still able to boot on 4-level hardware. +In this case additional page table level -- p4d -- will be folded at +runtime. == User-space and large virtual address space == |