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Date: Sat, 20 Jul 2013 14:56:06 +0900 From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp> To: herbert@...dor.apana.org.au, tim.c.chen@...ux.intel.com Cc: hpa@...or.com, gregkh@...uxfoundation.org, rjw@...ysocki.net, rafael.j.wysocki@...el.com, linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org, ak@...ux.intel.com, linux-acpi@...r.kernel.org Subject: Re: [PATCH 3.11-rc1] crypto: Fix boot failure due to moduledependency. Herbert Xu wrote: > On Fri, Jul 19, 2013 at 06:31:04PM -0700, Tim Chen wrote: > > > > However, when I have the library and generic algorithm compiled in, > > I do not see the PCLMULQDQ version loaded. > > > > CONFIG_CRYPTO_CRCT10DIF=y > > CONFIG_CRYPTO_CRCT10DIF_PCLMUL=m > > CONFIG_CRC_T10DIF=y > > That is completely expected. I don't really think we need to > do anything about this case. After all, if the admin wants to > use the optimised version for CRC_T10DIF then they could simply > compile that in as well. > Wow! ;-) But I'd expect something like static int __init crc_t10dif_mod_init(void) { +#if !defined(CONFIG_CRC_T10DIF_MODULE) && defined(CONFIG_CRYPTO_CRCT10DIF_PCLMUL_MODULE) + printk(KERN_WARNING "Consider CONFIG_CRYPTO_CRCT10DIF_PCLMUL=y for better performance\n"); +#endif crct10dif_tfm = crypto_alloc_shash("crct10dif", 0, 0); return PTR_RET(crct10dif_tfm); } because the admin might not be aware of this implication. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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