Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On 3/18/2016 7:25 AM, Robin Murphy wrote: > On 18/03/16 09:30, Boris Brezillon wrote: >> On Thu, 17 Mar 2016 23:50:20 + >> Russell King - ARM Linuxwrote: >> >>> On Thu, Mar 17, 2016 at 07:17:24PM -0400, ok...@codeaurora.org wrote: What is the correct way? I don't want to write engine->sram_dma = sram >>> >>> Well, what the driver _is_ wanting to do is to go from a CPU physical >>> address to a device DMA address. phys_to_dma() looks like the correct >>> thing there to me, but I guess that's just an offset and doesn't take >>> account of any IOMMU that may be in the way. >>> >>> If you have an IOMMU, then the whole phys_to_dma() thing is a total >>> failure as it only does a linear translation, and there are no >>> interfaces in the kernel to take account of an IOMMU in the way. So, >>> it needs something designed for the job, implemented and discussed by >>> the normal methods of proposing a new cross-arch interface for drivers >>> to use. >>> >>> What I'm certain of, though, is that the change proposed in this patch >>> will break current users of this driver: virt_to_page() on an address >>> returned by ioremap() is completely undefined, and will result in >>> either a kernel oops, or if not poking at memory which isn't a struct >>> page, ultimately resulting in something that isn't SRAM being pointed >>> to by "engine->sram_dma". >>> >> >> Or we could just do >> >> engine->sram_dma = res->start; >> >> which is pretty much what the SRAM/genalloc code is doing already. > > As Russell points out this is yet another type of "set up a DMA master to > access something other than kernel RAM" - there's already discussion in > progress over how to handle this for dmaengine slaves[1], so gathering more > use-cases might help distil exactly what the design of > not-strictly-DMA-but-so-closely-coupled-it-can't-really-live-anywhere-else > needs to be. > > Robin. > > [1]:http://lists.infradead.org/pipermail/linux-arm-kernel/2016-March/414422.html > Thanks for the link. dma_map_resource looks like to be the correct way of doing things. Just from the purist point of view, a driver is not supposed to know the physical address of a DMA address. That kills the intent of using DMA API. When programming descriptors, the DMA addresses should be programmed not physical addresses so that the same driver can be used in a system with IOMMU. The IOMMU DMA ops will remap the DMA address to a bus address that is not physical address. All of this operation needs to be isolated from the device driver. I don't know the architecture or the driver enough to write this. This is not ideally right but I can do this if Boris you are OK with this. engine->sram_dma = res->start; Another option is I can write engine->sram_dma = swiotlb_dma_to_phys(res->start) I agree that dma_map_single is not the right thing. -- Sinan Kaya Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On 3/18/2016 9:51 AM, Sinan Kaya wrote: > Another option is I can write > > engine->sram_dma = swiotlb_dma_to_phys(res->start) I realized that I made a mistake in the commit message and the code above. The code is trying to find DMA address from physical address. Not the other way around. I'll fix it on the next version. The correct suggestion above would be engine->sram_dma = swiotlb_phys_to_dmares->start) -- Sinan Kaya Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On Fri, 18 Mar 2016 11:25:48 + Robin Murphywrote: > On 18/03/16 09:30, Boris Brezillon wrote: > > On Thu, 17 Mar 2016 23:50:20 + > > Russell King - ARM Linux wrote: > > > >> On Thu, Mar 17, 2016 at 07:17:24PM -0400, ok...@codeaurora.org wrote: > >>> What is the correct way? I don't want to write engine->sram_dma = sram > >> > >> Well, what the driver _is_ wanting to do is to go from a CPU physical > >> address to a device DMA address. phys_to_dma() looks like the correct > >> thing there to me, but I guess that's just an offset and doesn't take > >> account of any IOMMU that may be in the way. > >> > >> If you have an IOMMU, then the whole phys_to_dma() thing is a total > >> failure as it only does a linear translation, and there are no > >> interfaces in the kernel to take account of an IOMMU in the way. So, > >> it needs something designed for the job, implemented and discussed by > >> the normal methods of proposing a new cross-arch interface for drivers > >> to use. > >> > >> What I'm certain of, though, is that the change proposed in this patch > >> will break current users of this driver: virt_to_page() on an address > >> returned by ioremap() is completely undefined, and will result in > >> either a kernel oops, or if not poking at memory which isn't a struct > >> page, ultimately resulting in something that isn't SRAM being pointed > >> to by "engine->sram_dma". > >> > > > > Or we could just do > > > > engine->sram_dma = res->start; > > > > which is pretty much what the SRAM/genalloc code is doing already. > > As Russell points out this is yet another type of "set up a DMA master > to access something other than kernel RAM" - there's already discussion > in progress over how to handle this for dmaengine slaves[1], so > gathering more use-cases might help distil exactly what the design of > not-strictly-DMA-but-so-closely-coupled-it-can't-really-live-anywhere-else > needs to be. > > Robin. > > [1]:http://lists.infradead.org/pipermail/linux-arm-kernel/2016-March/414422.html > Hm, interesting, thanks for the pointer. -- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On 18/03/16 09:30, Boris Brezillon wrote: On Thu, 17 Mar 2016 23:50:20 + Russell King - ARM Linuxwrote: On Thu, Mar 17, 2016 at 07:17:24PM -0400, ok...@codeaurora.org wrote: What is the correct way? I don't want to write engine->sram_dma = sram Well, what the driver _is_ wanting to do is to go from a CPU physical address to a device DMA address. phys_to_dma() looks like the correct thing there to me, but I guess that's just an offset and doesn't take account of any IOMMU that may be in the way. If you have an IOMMU, then the whole phys_to_dma() thing is a total failure as it only does a linear translation, and there are no interfaces in the kernel to take account of an IOMMU in the way. So, it needs something designed for the job, implemented and discussed by the normal methods of proposing a new cross-arch interface for drivers to use. What I'm certain of, though, is that the change proposed in this patch will break current users of this driver: virt_to_page() on an address returned by ioremap() is completely undefined, and will result in either a kernel oops, or if not poking at memory which isn't a struct page, ultimately resulting in something that isn't SRAM being pointed to by "engine->sram_dma". Or we could just do engine->sram_dma = res->start; which is pretty much what the SRAM/genalloc code is doing already. As Russell points out this is yet another type of "set up a DMA master to access something other than kernel RAM" - there's already discussion in progress over how to handle this for dmaengine slaves[1], so gathering more use-cases might help distil exactly what the design of not-strictly-DMA-but-so-closely-coupled-it-can't-really-live-anywhere-else needs to be. Robin. [1]:http://lists.infradead.org/pipermail/linux-arm-kernel/2016-March/414422.html -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
Hi Sinan, [auto build test ERROR on arm64/for-next/core] [also build test ERROR on v4.5 next-20160318] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Sinan-Kaya/crypto-marvell-cesa-replace-dma_to_phys-with-dma_map_single/20160318-060640 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux for-next/core config: arm-allmodconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): drivers/crypto/marvell/cesa.c: In function 'mv_cesa_get_sram': >> drivers/crypto/marvell/cesa.c:354:21: error: macro "dma_map_single" requires >> 4 arguments, but only 3 given DMA_TO_DEVICE); ^ >> drivers/crypto/marvell/cesa.c:353:21: error: 'dma_map_single' undeclared >> (first use in this function) engine->sram_dma = dma_map_single(cesa->dev, engine->sram, ^ drivers/crypto/marvell/cesa.c:353:21: note: each undeclared identifier is reported only once for each function it appears in vim +/dma_map_single +354 drivers/crypto/marvell/cesa.c 347 return -EINVAL; 348 349 engine->sram = devm_ioremap_resource(cesa->dev, res); 350 if (IS_ERR(engine->sram)) 351 return PTR_ERR(engine->sram); 352 > 353 engine->sram_dma = dma_map_single(cesa->dev, engine->sram, > 354DMA_TO_DEVICE); 355 356 return 0; 357 } --- 0-DAY kernel test infrastructureOpen Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation .config.gz Description: Binary data
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On 2016-03-17 18:54, Russell King - ARM Linux wrote: On Thu, Mar 17, 2016 at 06:02:15PM -0400, Sinan Kaya wrote: Getting ready to remove dma_to_phys API. Drivers should not be using this API for DMA operations. Instead, they should go through the dma_map or dma_alloc APIs. Signed-off-by: Sinan Kaya--- drivers/crypto/marvell/cesa.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c index c0656e7..52ddfa4 100644 --- a/drivers/crypto/marvell/cesa.c +++ b/drivers/crypto/marvell/cesa.c @@ -350,8 +350,8 @@ static int mv_cesa_get_sram(struct platform_device *pdev, int idx) if (IS_ERR(engine->sram)) return PTR_ERR(engine->sram); - engine->sram_dma = phys_to_dma(cesa->dev, - (phys_addr_t)res->start); + engine->sram_dma = dma_map_single(cesa->dev, engine->sram, + DMA_TO_DEVICE); Documentation/DMA-API.txt dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, size_t size, enum dma_data_direction direction) Notes: Not all memory regions in a machine can be mapped by this API. Further, contiguous kernel virtual space may not be contiguous as physical memory. Since this API does not provide any scatter/gather capability, it will fail if the user tries to map a non-physically contiguous piece of memory. For this reason, memory to be mapped by this API should be obtained from sources which guarantee it to be physically contiguous (like kmalloc). Specifically, ioremapped memory will *not* work as you expect with dma_map_single(). What is the correct way? I don't want to write engine->sram_dma = sram -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
Getting ready to remove dma_to_phys API. Drivers should not be using this API for DMA operations. Instead, they should go through the dma_map or dma_alloc APIs. Signed-off-by: Sinan Kaya--- drivers/crypto/marvell/cesa.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c index c0656e7..52ddfa4 100644 --- a/drivers/crypto/marvell/cesa.c +++ b/drivers/crypto/marvell/cesa.c @@ -350,8 +350,8 @@ static int mv_cesa_get_sram(struct platform_device *pdev, int idx) if (IS_ERR(engine->sram)) return PTR_ERR(engine->sram); - engine->sram_dma = phys_to_dma(cesa->dev, - (phys_addr_t)res->start); + engine->sram_dma = dma_map_single(cesa->dev, engine->sram, + DMA_TO_DEVICE); return 0; } -- 1.8.2.1 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On Thu, Mar 17, 2016 at 07:17:24PM -0400, ok...@codeaurora.org wrote: > What is the correct way? I don't want to write engine->sram_dma = sram Well, what the driver _is_ wanting to do is to go from a CPU physical address to a device DMA address. phys_to_dma() looks like the correct thing there to me, but I guess that's just an offset and doesn't take account of any IOMMU that may be in the way. If you have an IOMMU, then the whole phys_to_dma() thing is a total failure as it only does a linear translation, and there are no interfaces in the kernel to take account of an IOMMU in the way. So, it needs something designed for the job, implemented and discussed by the normal methods of proposing a new cross-arch interface for drivers to use. What I'm certain of, though, is that the change proposed in this patch will break current users of this driver: virt_to_page() on an address returned by ioremap() is completely undefined, and will result in either a kernel oops, or if not poking at memory which isn't a struct page, ultimately resulting in something that isn't SRAM being pointed to by "engine->sram_dma". -- RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On Fri, 18 Mar 2016 09:51:37 -0400 Sinan Kayawrote: > On 3/18/2016 7:25 AM, Robin Murphy wrote: > > On 18/03/16 09:30, Boris Brezillon wrote: > >> On Thu, 17 Mar 2016 23:50:20 + > >> Russell King - ARM Linux wrote: > >> > >>> On Thu, Mar 17, 2016 at 07:17:24PM -0400, ok...@codeaurora.org wrote: > What is the correct way? I don't want to write engine->sram_dma = sram > >>> > >>> Well, what the driver _is_ wanting to do is to go from a CPU physical > >>> address to a device DMA address. phys_to_dma() looks like the correct > >>> thing there to me, but I guess that's just an offset and doesn't take > >>> account of any IOMMU that may be in the way. > >>> > >>> If you have an IOMMU, then the whole phys_to_dma() thing is a total > >>> failure as it only does a linear translation, and there are no > >>> interfaces in the kernel to take account of an IOMMU in the way. So, > >>> it needs something designed for the job, implemented and discussed by > >>> the normal methods of proposing a new cross-arch interface for drivers > >>> to use. > >>> > >>> What I'm certain of, though, is that the change proposed in this patch > >>> will break current users of this driver: virt_to_page() on an address > >>> returned by ioremap() is completely undefined, and will result in > >>> either a kernel oops, or if not poking at memory which isn't a struct > >>> page, ultimately resulting in something that isn't SRAM being pointed > >>> to by "engine->sram_dma". > >>> > >> > >> Or we could just do > >> > >> engine->sram_dma = res->start; > >> > >> which is pretty much what the SRAM/genalloc code is doing already. > > > > As Russell points out this is yet another type of "set up a DMA master to > > access something other than kernel RAM" - there's already discussion in > > progress over how to handle this for dmaengine slaves[1], so gathering more > > use-cases might help distil exactly what the design of > > not-strictly-DMA-but-so-closely-coupled-it-can't-really-live-anywhere-else > > needs to be. > > > > Robin. > > > > [1]:http://lists.infradead.org/pipermail/linux-arm-kernel/2016-March/414422.html > > > > Thanks for the link. > > dma_map_resource looks like to be the correct way of doing things. Just from > the purist point of view, a driver is not supposed to know the physical > address > of a DMA address. That kills the intent of using DMA API. When programming > descriptors, > the DMA addresses should be programmed not physical addresses so that the > same > driver can be used in a system with IOMMU. The IOMMU DMA ops will remap the > DMA > address to a bus address that is not physical address. All of this operation > needs > to be isolated from the device driver. > > > I don't know the architecture or the driver enough to write this. This is not > ideally > right but I can do this if Boris you are OK with this. > > engine->sram_dma = res->start; I don't know. How about waiting for the 'dma_{map,unmap}_resource' discussion to settle down before removing phy_to_dma()/dma_to_phys() APIs (as suggested by Robin and Russell)? -- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On Thu, Mar 17, 2016 at 06:02:15PM -0400, Sinan Kaya wrote: > Getting ready to remove dma_to_phys API. Drivers should not be > using this API for DMA operations. Instead, they should go > through the dma_map or dma_alloc APIs. > > Signed-off-by: Sinan Kaya> --- > drivers/crypto/marvell/cesa.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c > index c0656e7..52ddfa4 100644 > --- a/drivers/crypto/marvell/cesa.c > +++ b/drivers/crypto/marvell/cesa.c > @@ -350,8 +350,8 @@ static int mv_cesa_get_sram(struct platform_device *pdev, > int idx) > if (IS_ERR(engine->sram)) > return PTR_ERR(engine->sram); > > - engine->sram_dma = phys_to_dma(cesa->dev, > -(phys_addr_t)res->start); > + engine->sram_dma = dma_map_single(cesa->dev, engine->sram, > + DMA_TO_DEVICE); Documentation/DMA-API.txt dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, size_t size, enum dma_data_direction direction) Notes: Not all memory regions in a machine can be mapped by this API. Further, contiguous kernel virtual space may not be contiguous as physical memory. Since this API does not provide any scatter/gather capability, it will fail if the user tries to map a non-physically contiguous piece of memory. For this reason, memory to be mapped by this API should be obtained from sources which guarantee it to be physically contiguous (like kmalloc). Specifically, ioremapped memory will *not* work as you expect with dma_map_single(). -- RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On Thu, 17 Mar 2016 23:50:20 + Russell King - ARM Linuxwrote: > On Thu, Mar 17, 2016 at 07:17:24PM -0400, ok...@codeaurora.org wrote: > > What is the correct way? I don't want to write engine->sram_dma = sram > > Well, what the driver _is_ wanting to do is to go from a CPU physical > address to a device DMA address. phys_to_dma() looks like the correct > thing there to me, but I guess that's just an offset and doesn't take > account of any IOMMU that may be in the way. > > If you have an IOMMU, then the whole phys_to_dma() thing is a total > failure as it only does a linear translation, and there are no > interfaces in the kernel to take account of an IOMMU in the way. So, > it needs something designed for the job, implemented and discussed by > the normal methods of proposing a new cross-arch interface for drivers > to use. > > What I'm certain of, though, is that the change proposed in this patch > will break current users of this driver: virt_to_page() on an address > returned by ioremap() is completely undefined, and will result in > either a kernel oops, or if not poking at memory which isn't a struct > page, ultimately resulting in something that isn't SRAM being pointed > to by "engine->sram_dma". > Or we could just do engine->sram_dma = res->start; which is pretty much what the SRAM/genalloc code is doing already. -- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 1/3] crypto: marvell/cesa - replace dma_to_phys with dma_map_single
On 3/18/2016 10:20 AM, Boris Brezillon wrote: > On Fri, 18 Mar 2016 09:51:37 -0400 > Sinan Kayawrote: > >> On 3/18/2016 7:25 AM, Robin Murphy wrote: >>> On 18/03/16 09:30, Boris Brezillon wrote: On Thu, 17 Mar 2016 23:50:20 + Russell King - ARM Linux wrote: > On Thu, Mar 17, 2016 at 07:17:24PM -0400, ok...@codeaurora.org wrote: >> What is the correct way? I don't want to write engine->sram_dma = sram > > Well, what the driver _is_ wanting to do is to go from a CPU physical > address to a device DMA address. phys_to_dma() looks like the correct > thing there to me, but I guess that's just an offset and doesn't take > account of any IOMMU that may be in the way. > > If you have an IOMMU, then the whole phys_to_dma() thing is a total > failure as it only does a linear translation, and there are no > interfaces in the kernel to take account of an IOMMU in the way. So, > it needs something designed for the job, implemented and discussed by > the normal methods of proposing a new cross-arch interface for drivers > to use. > > What I'm certain of, though, is that the change proposed in this patch > will break current users of this driver: virt_to_page() on an address > returned by ioremap() is completely undefined, and will result in > either a kernel oops, or if not poking at memory which isn't a struct > page, ultimately resulting in something that isn't SRAM being pointed > to by "engine->sram_dma". > Or we could just do engine->sram_dma = res->start; which is pretty much what the SRAM/genalloc code is doing already. >>> >>> As Russell points out this is yet another type of "set up a DMA master to >>> access something other than kernel RAM" - there's already discussion in >>> progress over how to handle this for dmaengine slaves[1], so gathering more >>> use-cases might help distil exactly what the design of >>> not-strictly-DMA-but-so-closely-coupled-it-can't-really-live-anywhere-else >>> needs to be. >>> >>> Robin. >>> >>> [1]:http://lists.infradead.org/pipermail/linux-arm-kernel/2016-March/414422.html >>> >> >> Thanks for the link. >> >> dma_map_resource looks like to be the correct way of doing things. Just from >> the purist point of view, a driver is not supposed to know the physical >> address >> of a DMA address. That kills the intent of using DMA API. When programming >> descriptors, >> the DMA addresses should be programmed not physical addresses so that the >> same >> driver can be used in a system with IOMMU. The IOMMU DMA ops will remap the >> DMA >> address to a bus address that is not physical address. All of this operation >> needs >> to be isolated from the device driver. >> >> >> I don't know the architecture or the driver enough to write this. This is >> not ideally >> right but I can do this if Boris you are OK with this. >> >> engine->sram_dma = res->start; > > I don't know. > > How about waiting for the 'dma_{map,unmap}_resource' discussion to > settle down before removing phy_to_dma()/dma_to_phys() APIs (as > suggested by Robin and Russell)? > > Sure, that's fine for me. -- Sinan Kaya Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html