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Documentation: update kernel stack for x86_64

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Commit 6538b8ea88 ("x86_64: expand kernel stack to 16K")
expanded kernel stack for x86_64 but left the wrong documentation,
update it.

Signed-off-by: Yan Yan <yanyan.yan@antgroup.com>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Link: https://lore.kernel.org/r/20230328072537.20188-1-yanyan.yan@antgroup.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
晏艳(采苓) 2023-03-28 15:25:37 +08:00 committed by Jonathan Corbet
parent 4a2d80ad06
commit 530421acae
1 changed files with 1 additions and 1 deletions
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Documentation/arch/x86/kernel-stacks.rst
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@ -12,7 +12,7 @@ Most of the text from Keith Owens, hacked by AK
x86_64 page size (PAGE_SIZE) is 4K.
Like all other architectures, x86_64 has a kernel stack for every
active thread. These thread stacks are THREAD_SIZE (2*PAGE_SIZE) big.
active thread. These thread stacks are THREAD_SIZE (4*PAGE_SIZE) big.
These stacks contain useful data as long as a thread is alive or a
zombie. While the thread is in user space the kernel stack is empty
except for the thread_info structure at the bottom.