Thread (19 messages) 19 messages, 5 authors, 2017-01-11

[PATCH v2 2/5] arm64: Work around Falkor erratum 1003

From: mark.rutland@arm.com (Mark Rutland)
Date: 2017-01-03 16:06:15
Also in: kvm, kvmarm, lkml

Hi,

On Thu, Dec 29, 2016 at 05:43:32PM -0500, Christopher Covington wrote:
+config QCOM_FALKOR_E1003_RESERVED_ASID
+	int
+	default 1
+	depends on QCOM_FALKOR_ERRATUM_1003
+
I don't think this needs to be configurable, so let's drop this into a
header, e.g. drop:

#define FALKOR_RESERVED_ASID	1

... in <asm/mmu_context.h>, protecting the rest with an ifndef
__ASSEMBLY__ guard.

[...]
+#ifdef CONFIG_QCOM_FALKOR_ERRATUM_1003
+alternative_if ARM64_WORKAROUND_QCOM_FALKOR_E1003
+	mrs     x2, ttbr0_el1                   // get cuurent TTBR0_EL1
+	mov     x3, #CONFIG_QCOM_FALKOR_ERRATUM_1003	// reserved ASID
Wrong macro? That's not the ASID.

Thanks,
Mark.
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