From a49342abbb5d68fafab1d2ba4c669c0e76e32c65 Mon Sep 17 00:00:00 2001 From: Fiona Trahe Date: Wed, 26 Oct 2016 18:23:31 +0100 Subject: [PATCH] doc: add VT-d/iommu settings for QAT Add more information about VT-d/iommu settings for QAT PMD. Remove limitation indicating QAT driver is not performance tuned. Signed-off-by: Fiona Trahe Acked-by: Deepak Kumar Jain Acked-by: Arek Kusztal --- doc/guides/cryptodevs/qat.rst | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/doc/guides/cryptodevs/qat.rst b/doc/guides/cryptodevs/qat.rst index 70bc2b11ed..52a9ae3555 100644 --- a/doc/guides/cryptodevs/qat.rst +++ b/doc/guides/cryptodevs/qat.rst @@ -77,7 +77,6 @@ Limitations * Hash only is not supported except SNOW 3G UIA2 and KASUMI F9. * Cipher only is not supported except SNOW 3G UEA2, KASUMI F8 and 3DES. * Only supports the session-oriented API implementation (session-less APIs are not supported). -* Not performance tuned. * SNOW 3G (UEA2) and KASUMI (F8) supported only if cipher length, cipher offset fields are byte-aligned. * SNOW 3G (UIA2) and KASUMI (F9) supported only if hash length, hash offset fields are byte-aligned. * No BSD support as BSD QAT kernel driver not available. @@ -201,7 +200,9 @@ The steps below assume you are: * Running DPDK on a platform with one ``DH895xCC`` device. * On a kernel at least version 4.4. -In BIOS ensure that SRIOV is enabled and VT-d is disabled. +In BIOS ensure that SRIOV is enabled and either +a) disable VT-d or +b) enable VT-d and set ``"intel_iommu=on iommu=pt"`` in the grub file. Ensure the QAT driver is loaded on your system, by executing:: @@ -260,7 +261,9 @@ The steps below assume you are: * Running DPDK on a platform with one ``C62x`` device. * On a kernel at least version 4.5. -In BIOS ensure that SRIOV is enabled and VT-d is disabled. +In BIOS ensure that SRIOV is enabled and either +a) disable VT-d or +b) enable VT-d and set ``"intel_iommu=on iommu=pt"`` in the grub file. Ensure the QAT driver is loaded on your system, by executing:: @@ -304,7 +307,9 @@ The steps below assume you are: * Running DPDK on a platform with one ``C3xxx`` device. * On a kernel at least version 4.5. -In BIOS ensure that SRIOV is enabled and VT-d is disabled. +In BIOS ensure that SRIOV is enabled and either +a) disable VT-d or +b) enable VT-d and set ``"intel_iommu=on iommu=pt"`` in the grub file. Ensure the QAT driver is loaded on your system, by executing:: -- 2.20.1