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Message-Id: <200705281957.38954.rjw@sisk.pl> Date: Mon, 28 May 2007 19:57:38 +0200 From: "Rafael J. Wysocki" <rjw@...k.pl> To: Pavel Machek <pavel@....cz> Cc: Bill Davidsen <davidsen@....com>, Linux Kernel M/L <linux-kernel@...r.kernel.org> Subject: Re: [2.6.21.1] resume doesn't run suspended kernel? On Monday, 28 May 2007 15:26, Pavel Machek wrote: > Hi! > > > >That's clear, I'll have to use xen or kvm or similar which restores > > >the system as suspended. Thanks for the clarification of the limitations. > > > > > Sorry, I wrote that late at night and quickly. I should have said > > "design decision" rather than "limitation," For systems which don't do > > multiple kernels it's not an issue. > > > > I certainly would not have made the same decision, but I didn't write > > the code. It seems more robust to save everything than to try to > > identify what has and hasn't changed in a modular kernel. > > We rely on atomic copy routine not moving inside the kernel. Yes, it > would be possible to copy it to "known good" address and gain ability > to resume different kernels. Actually it should not be _that_ hard. Yup. Don't we do something like this for the (ACPI-based) suspend to RAM already? Greetings, Rafael - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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