• Rashmica Gupta's avatar
    selftests/powerpc: Add test to check if VSRs are corrupted · 5f337e3e
    Rashmica Gupta authored
    When a transaction is aborted, VSR values should rollback to the
    checkpointed values before the transaction began. VSRs used elsewhere in
    the kernel during a transaction, or while the transaction is suspended
    should not affect the checkpointed values.
    
    Prior to the bug fix in commit d31626f7 ("powerpc: Don't corrupt
    transactional state when using FP/VMX in kernel") when VMX was requested
    by the kernel the .vr_state (which held the checkpointed state of VSRs
    before the transaction) was overwritten with the current state from
    outside the transation. Thus if the transaction did not complete, the
    VSR values would be "rolled back" to potentially incorrect values.
    Signed-off-by: default avatarRashmica Gupta <rashmicy@gmail.com>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    5f337e3e
Makefile 289 Bytes