Messages in this thread | | | Subject | Re: PageReserved removal woes: vbetool, suspend-to-ram breakage | Date | Tue, 22 Nov 2005 18:54:57 +0000 | From | Matthew Garrett <> |
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Dominik Brodowski <linux@dominikbrodowski.net> wrote:
> Just wanted to let you know that the warning introduced in > [PATCH] core remove PageReserved
It's not much of a warning, it seems to stop vbetool from working (which may explain a few complaints about ACPI suspend being broken in 2.6.15 - it's not, but vbetool is...)
vbetool (well, strictly it's LRMI, but...) needs to access real-mode memory. On the other hand, it's probably a bad idea to let it actually scribble over RAM that the kernel may be using. So MAP_PRIVATE|PROT_WRITE seems to be the correct thing to do. This certainly /seemed/ to work in older kernels, but doesn't any more. What should I be doing instead?
(I'm also not quite sure why the error claims that it's deprecated, whereas in fact it doesn't actually work at all. Breaking userspace without warning isn't terribly nice) -- Matthew Garrett | mjg59-chiark.mail.linux-rutgers.kernel@srcf.ucam.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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