x86/iommu: add IOMMU_STRESS Kconfig entry (2be69c79) · Commits · 戴 / test

This Kconfig option is intended to enable various code paths or parameters in IOMMU implementations to stress test the code and/or the hardware. This can also be done by disabling optimizations in the code when this option is switched on. Signed-off-by:

Joerg Roedel <joerg.roedel@amd.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

arch/x86/Kconfig.debug

+8 −0

Original line number	Diff line number	Diff line
		@@ -159,6 +159,14 @@ config IOMMU_DEBUG
		options. See Documentation/x86_64/boot-options.txt for more
		details.

		config IOMMU_STRESS
		bool "Enable IOMMU stress-test mode"
		---help---
		This option disables various optimizations in IOMMU related
		code to do real stress testing of the IOMMU code. This option
		will cause a performance drop and should only be enabled for
		testing.

		config IOMMU_LEAK
		bool "IOMMU leak tracing"
		depends on IOMMU_DEBUG && DMA_API_DEBUG

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