Messages in this thread | | | Subject | Re: [ACPI] Re: [Proposal]Another way to save/restore PCI config space for suspend/resume | From | Li Shaohua <> | Date | Wed, 27 Oct 2004 08:50:46 +0800 |
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On Tue, 2004-10-26 at 17:21, Pavel Machek wrote: > Hi! > > > We suffer from PCI config space issue for a long time, which causes many > > system can't correctly resume. Current Linux mechanism isn't sufficient. > > Here is a another idea: > > Record all PCI writes in Linux kernel, and redo all the write after > > resume in order. The idea assumes Firmware will restore all PCI config > > space to the boot time state, which is true at least for IA32. > > That looks extremely ugly to me. If you want to do something special > in resume function, just do it there. It will probably share a lot of > code with your init function, anyway. How can you handle devices without driver? And how to save/restore config space for special devices, such as LPC bridge and host bridge?
-Shaohua
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