From: Ian Munsie <[email protected]> When we deactivate the AFU directed mode we free the scheduled process area, but did not clear the register in the hardware that has a pointer to it.
This should be fine since we will have already cleared out every context and we won't do anything that would cause the hardware to access it until after we have allocated a new one, but just to be safe this patch clears out the register when we free the page. Signed-off-by: Ian Munsie <[email protected]> --- drivers/misc/cxl/native.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/misc/cxl/native.c b/drivers/misc/cxl/native.c index f2b37b4..0f24fa5 100644 --- a/drivers/misc/cxl/native.c +++ b/drivers/misc/cxl/native.c @@ -185,6 +185,7 @@ static int alloc_spa(struct cxl_afu *afu) static void release_spa(struct cxl_afu *afu) { + cxl_p1n_write(afu, CXL_PSL_SPAP_An, 0); free_pages((unsigned long) afu->spa, afu->spa_order); } -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
