Re: [PATCH v3] Patch introducing API to read/write Intel Architecture Model Specific Registers (MSR)...
From: Panu Matilainen <hidden>
Date: 2016-01-21 10:38:46
From: Panu Matilainen <hidden>
Date: 2016-01-21 10:38:46
On 01/21/2016 10:18 AM, Wojciech Andralojc wrote:
Patch reworked. Signed-off-by: Wojciech Andralojc <redacted> --- lib/librte_eal/common/include/arch/x86/rte_msr.h | 88 +++++++++++++++++ lib/librte_eal/linuxapp/eal/Makefile | 1 + lib/librte_eal/linuxapp/eal/arch/x86/rte_msr.c | 116 +++++++++++++++++++++++ 3 files changed, 205 insertions(+) create mode 100644 lib/librte_eal/common/include/arch/x86/rte_msr.h create mode 100644 lib/librte_eal/linuxapp/eal/arch/x86/rte_msr.c
This creates a new arch-specific public API, with rte_msr.h installed as a public header and implementation in the library (as opposed to inline), and so the new functions would have to be added to rte_eal_version.map. However that is a bit of a problem since it only exists on IA architectures, so it'd mean dummy entries in the version map for all other architectures. All the other arch-specific APIs are inline code so this is the first of its kind. Jerin Jacob suggested [1] adding these as internal (inline) functions which to me looks like a more sensible approach, arch-specific APIs tend to be problematic. [1] http://dpdk.org/ml/archives/dev/2016-January/031095.html - Panu -