Commit 7e3a57fa authored Oct 02, 2019 by Marc Zyngier Committed by Catalin Marinas Oct 15, 2019

arm64: Document ICC_CTLR_EL3.PMHE setting requirements



It goes without saying, but better saying it: the kernel expects
ICC_CTLR_EL3.PMHE to have the same value across all CPUs, and
for that setting not to change during the lifetime of the kernel.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

parent f2266504

Documentation/arm64/booting.rst

+3 −0

Original line number	Diff line number	Diff line
		@@ -213,6 +213,9 @@ Before jumping into the kernel, the following conditions must be met:

		- ICC_SRE_EL3.Enable (bit 3) must be initialiased to 0b1.
		- ICC_SRE_EL3.SRE (bit 0) must be initialised to 0b1.
		- ICC_CTLR_EL3.PMHE (bit 6) must be set to the same value across
		all CPUs the kernel is executing on, and must stay constant
		for the lifetime of the kernel.

		- If the kernel is entered at EL1:

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