Re: [x86-tip] strange nr_cpus= boot regression

From: Borislav Petkov
Date: Mon Sep 26 2016 - 10:15:45 EST

On Mon, Sep 26, 2016 at 03:40:34PM +0200, Borislav Petkov wrote:
> <--- v4.8-rc7-496-g20eefd15d70: bad
> 20eefd15d70f Merge branch 'x86/apic'
> <--- v4.8-rc7-475-gb468c89ee756: OK
> b468c89ee756 Merge branch 'timers/core'

Ok, it points to the merge commit here too:

git bisect start
# bad: [20eefd15d70f297c7e193e087ed4103b47c2e312] Merge branch 'x86/apic'
git bisect bad 20eefd15d70f297c7e193e087ed4103b47c2e312
# good: [b468c89ee7568999dfc575da56841694c118164a] Merge branch 'timers/core'
git bisect good b468c89ee7568999dfc575da56841694c118164a
# good: [5035da41996d346c648a65c1d7a9f6469c7d358a] x86/apic: Update comment about disabling processor focus
git bisect good 5035da41996d346c648a65c1d7a9f6469c7d358a
# good: [f7c28833c252031bc68a29e26a18a661797cf3a3] x86/acpi: Enable acpi to register all possible cpus at boot time
git bisect good f7c28833c252031bc68a29e26a18a661797cf3a3
# good: [dc6db24d2476cd09c0ecf2b8d80313539f737a89] x86/acpi: Set persistent cpuid <-> nodeid mapping when booting
git bisect good dc6db24d2476cd09c0ecf2b8d80313539f737a89
# good: [fd74da217df7d4bd25e95411da64e0b92762842e] acpi: Validate processor id when mapping the processor
git bisect good fd74da217df7d4bd25e95411da64e0b92762842e
# first bad commit: [20eefd15d70f297c7e193e087ed4103b47c2e312] Merge branch 'x86/apic'


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