修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/Documentation/vm/hwpoison.rst
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 This patchkit implements the necessary infrastructure in the VM.
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-To quote the overview comment:
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+To quote the overview comment::
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- * High level machine check handler. Handles pages reported by the
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- * hardware as being corrupted usually due to a 2bit ECC memory or cache
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- * failure.
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- *
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- * This focusses on pages detected as corrupted in the background.
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- * When the current CPU tries to consume corruption the currently
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- * running process can just be killed directly instead. This implies
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- * that if the error cannot be handled for some reason it's safe to
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- * just ignore it because no corruption has been consumed yet. Instead
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- * when that happens another machine check will happen.
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- *
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- * Handles page cache pages in various states. The tricky part
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- * here is that we can access any page asynchronous to other VM
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- * users, because memory failures could happen anytime and anywhere,
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- * possibly violating some of their assumptions. This is why this code
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- * has to be extremely careful. Generally it tries to use normal locking
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- * rules, as in get the standard locks, even if that means the
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- * error handling takes potentially a long time.
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- *
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- * Some of the operations here are somewhat inefficient and have non
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- * linear algorithmic complexity, because the data structures have not
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- * been optimized for this case. This is in particular the case
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- * for the mapping from a vma to a process. Since this case is expected
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- * to be rare we hope we can get away with this.
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+	High level machine check handler. Handles pages reported by the
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+	hardware as being corrupted usually due to a 2bit ECC memory or cache
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+	failure.
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+
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+	This focusses on pages detected as corrupted in the background.
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+	When the current CPU tries to consume corruption the currently
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+	running process can just be killed directly instead. This implies
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+	that if the error cannot be handled for some reason it's safe to
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+	just ignore it because no corruption has been consumed yet. Instead
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+	when that happens another machine check will happen.
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+
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+	Handles page cache pages in various states. The tricky part
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+	here is that we can access any page asynchronous to other VM
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+	users, because memory failures could happen anytime and anywhere,
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+	possibly violating some of their assumptions. This is why this code
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+	has to be extremely careful. Generally it tries to use normal locking
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+	rules, as in get the standard locks, even if that means the
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+	error handling takes potentially a long time.
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+
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+	Some of the operations here are somewhat inefficient and have non
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+	linear algorithmic complexity, because the data structures have not
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+	been optimized for this case. This is in particular the case
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+	for the mapping from a vma to a process. Since this case is expected
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+	to be rare we hope we can get away with this.
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 The code consists of a the high level handler in mm/memory-failure.c,
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 a new page poison bit and various checks in the VM to handle poisoned