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Register MIDR_EL1 is masked to get variant and revision fields, then compared against midr_range_min and midr_range_max when checking whether CPU is affected by any particular erratum. However, variant and revision fields in MIDR_EL1 are separated by 16 bits, so the min and max of midr range should be constructed accordingly, otherwise the patch will not be applied when variant field is non-0. Cc: stable@vger.kernel.org # 3.19+ Acked-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Bo Yan <byan@nvidia.com> [will: use MIDR_VARIANT_SHIFT to construct upper bound] Signed-off-by: Will Deacon <will.deacon@arm.com> |
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| Kconfig | ||
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