Messages in this thread | | | Date | Mon, 5 Mar 2007 15:27:15 +0100 | From | Andi Kleen <> | Subject | Re: [patch] paravirt: VDSO page is essential |
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On Mon, Mar 05, 2007 at 01:06:31PM +0100, Ingo Molnar wrote: > Subject: [patch] paravirt: VDSO page is essential > From: Ingo Molnar <mingo@elte.hu> > > commit 3bbf54725467d604698721384d858b5983b87e8f disables the VDSO for > CONFIG_PARAVIRT kernels. This #ifdeffery was a bad change: the VDSO is
Well it was the change that made my test machine (with SUSE 9.0 userland) work with CONFIG_PARAVIRT on. If you have a better solution please post it.
> an essential component of Linux, and this change forces all of them to > use int $0x80 - including sane ones like KVM. (If a hypervisor does not > handle the VDSO properly then it can work things around via the vdso=0
No hypervisor involved, just CONFIG_PARAVIRT=y on bare hardware.
> boot option. Or CONFIG_PARAVIRT should not have been merged. But in any > case, it is a basic taste issue: we DO NOT #ifdef around core features > like this!)
We set sensible defaults for full backwards compatibility.
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