From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Date: Tue, 25 Jun 2019 06:59:05 +0000 Subject: Re: Regression in 543cea9a - was: Re: Kernel problem on rx2800 i2 Message-Id: <20190625065905.GA30073@lst.de> List-Id: References: <1d62aadd-67b6-da13-53cc-4b5213de8937@physik.fu-berlin.de> In-Reply-To: <1d62aadd-67b6-da13-53cc-4b5213de8937@physik.fu-berlin.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Tue, Jun 25, 2019 at 08:54:11AM +0200, John Paul Adrian Glaubitz wrote: > Okay, thanks. I'll whip up a patch for Frank to test. The one below should do it, but from looking at the ia64 zone initialization I'm not sure this will be the culprit. diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index 2c2772e9702a..3e802f4580b3 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -82,9 +82,7 @@ static gfp_t __dma_direct_optimal_gfp_mask(struct device *dev, u64 dma_mask, */ if (*phys_mask <= DMA_BIT_MASK(ARCH_ZONE_DMA_BITS)) return GFP_DMA; - if (*phys_mask <= DMA_BIT_MASK(32)) - return GFP_DMA32; - return 0; + return GFP_DMA32; } static bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size)