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Fix driver build for RHEL 7.7/4.13+ w/CONFIG_VIRT_CPU_ACCOUNTING_GEN #1471

Merged
merged 3 commits into from
Aug 9, 2019
Merged

Fix driver build for RHEL 7.7/4.13+ w/CONFIG_VIRT_CPU_ACCOUNTING_GEN #1471

merged 3 commits into from
Aug 9, 2019

Commits on Aug 9, 2019

  1. Add macros to detect RHEL kernels

    @gnosek
    gnosek committed Aug 9, 2019
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  2. Fix driver build for RHEL 7.7/4.13+ w/CONFIG_VIRT_CPU_ACCOUNTING_GEN 

    Kernel commits 60a9ce57e7c5ac1df3a39fb941022bbfa40c0862
and bac5b6b6b11560f323e71d0ebac4061cfe5f56c0 move the vtime_* fields
from task_struct to a nested struct vtime.

RHEL 7.7 is the first kernel where we hit this but the changes landed
in upstream kernel 4.13.

To hit this bug, CONFIG_VIRT_CPU_ACCOUNTING_GEN has to be set.
    @gnosek
    gnosek committed Aug 9, 2019
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  3. Fix ppm_access_ok macro for RHEL 8.1 

    RHEL 8.1 backports the definition of access_ok from 5.0.
    @gnosek
    gnosek committed Aug 9, 2019
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