redonkable/alistair23-linux
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lguest: don't disable iospace.

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This no longer speeds up boot (IDE got better, I guess), but it does stop
us probing for a PCI bus.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2015-02-11 15:15:10 +10:30
parent 48fd6b71d6
commit d1c29465b8
1 changed files with 0 additions and 8 deletions
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8
arch/x86/lguest/boot.c
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@ -1399,14 +1399,6 @@ __init void lguest_init(void)
/* Hook in our special panic hypercall code. */
atomic_notifier_chain_register(&panic_notifier_list, &paniced);
/*
* The IDE code spends about 3 seconds probing for disks: if we reserve
* all the I/O ports up front it can't get them and so doesn't probe.
* Other device drivers are similar (but less severe). This cuts the
* kernel boot time on my machine from 4.1 seconds to 0.45 seconds.
*/
paravirt_disable_iospace();
/*
* This is messy CPU setup stuff which the native boot code does before
* start_kernel, so we have to do, too: