Messages in this thread | | | Date | Thu, 8 May 2008 01:02:54 +0200 | From | Pavel Machek <> | Subject | Re: 2.6.26, PAT and AMD family 6 |
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On Wed 2008-05-07 15:40:38, Yinghai Lu wrote: > On Wed, May 7, 2008 at 3:37 PM, Pavel Machek <pavel@suse.cz> wrote: > > On Wed 2008-05-07 15:22:37, Yinghai Lu wrote: > > > On Wed, May 7, 2008 at 3:14 PM, Pavel Machek <pavel@suse.cz> wrote: > > > > 3) copy&paste code remained in the patch > > > > > > i thought to keep the stub so could add more other stuff in the switch > > > like 64 bit > > > > This is _not_ good enough reason to copy&paste. Just do it like this: > > > > > > > switch (c->x86_vendor) { > > > case X86_VENDOR_AMD: > > > early_init_amd(c); > > > > > break; > > > case X86_VENDOR_INTEL: > > > early_init_intel(c); > > > > > break; > > > case X86_VENDOR_CENTAUR: > > > early_init_centaur(c); > > > break; > > > } > > > > # clear_cpu_cap(c, X86_FEATURE_PAT); > > > > # > > # switch (c->x86_vendor) { > > # case X86_VENDOR_AMD: > > # if (c->x86 >= 0xf && c->x86 <= 0x11) > > > > # set_cpu_cap(c, X86_FEATURE_PAT); > > # break; > > # case X86_VENDOR_INTEL: > > # if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15)) > > > > # set_cpu_cap(c, X86_FEATURE_PAT); > > # break; > > # } > > > > And then, factor out code marked # into separate function, and call it > > from all three places. > > still need two copies or ifdef, otherwise you will check some 32bit > only cpu fam/model in 64bit node.
So we'll check 32-bit only cpu in 64bit node. What is the problem? Being microsecond slower during startup? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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