resource map sanity check conflict: 0xfed40000 0xfed44fff0xfed44000 0xfed44fff Intel Flush Page WARNING: at/usr/src/packages/BUILD/kernel-desktop-2.6.37/linux-2.6.36/arch/x86/mm/ioremap.c:98__ioremap_caller+0x353/0x380() Hardware name: 766929G Info: mapping multiple BARs. Your kernel is fine. Modules linked in: ... Pid: 382, comm: modprobe Not tainted 2.6.37-rc2-0.0.0.4ae942e-desktop #1 Call Trace: [<ffffffff81005ac9>] dump_trace+0x79/0x340 [<ffffffff8151e921>] dump_stack+0x69/0x6f [<ffffffff81057d2b>] warn_slowpath_common+0x7b/0xc0 [<ffffffff81057e25>] warn_slowpath_fmt+0x45/0x50 [<ffffffff81032453>] __ioremap_caller+0x353/0x380 [<ffffffffa02c68d7>] tpm_tis_init+0x57/0x660 [tpm_tis] [<ffffffff812e8f29>] pnp_device_probe+0x69/0xe0 [<ffffffff8132afc4>] really_probe+0x64/0x200 ... dmesg: https://bugzillafiles.novell.org/attachment.cgi?id=401414 lspci -vvnnxxx: https://bugzillafiles.novell.org/attachment.cgi?id=401643 /proc/iomem: https://bugzillafiles.novell.org/attachment.cgi?id=401476 References: http://lkml.org/lkml/2010/11/24/233 https://bugzilla.novell.com/show_bug.cgi?id=655048
Created attachment 40032 [details] dmesg with test patch This is another manifestation of bug 23542. In both cases, intel-gtt allocates an "Intel Flush Page" using pci_bus_alloc_resource(). That does not currently pay any attention to ACPI devices, so we may put the flush page on top of another device. There's a test patch here: https://bugzilla.kernel.org/show_bug.cgi?id=23542#c14 Jiri tested it and collected this dmesg showing that it fixes the problem. This patch is still under discussion and is not upstream yet.
Created attachment 40492 [details] avoid e820 regions The conflict between the flush page and the TPM occurs when we allocate the flush page using top-down allocation, which went into 2.6.37-rc1. There have been too many problems with that approach, so we plan to revert that by applying this patch to 2.6.37-rc6. This takes us back to bottom-up allocation, so it should fix this issue, but it'd be great if anybody can confirm it.