Hi, it looks like linux can't use the correct PCI host resources when using an overridden DSDT table, even with an _unmodified_ one. I am using 3.19-rc5 rather vanilla (no acpi changes anyways) on a Bay Trail tablet. When I override the DSDT table I get these messages, and most of the devices don't work anymore: [ 0.000000] DSDT ACPI table found in initrd [kernel/firmware/acpi/dsdt.aml][0x103c3] [...] [ 0.000000] ACPI: Override [DSDT- A M I ], this is unsafe: tainting kernel [...] [ 0.000000] ACPI: DSDT 0x000000007BCF1000 Physical table override, new table: 0x00000000792E9000 [ 0.000000] ACPI: DSDT 0x00000000792E9000 0103C3 (v02 ALASKA A M I 00000003 AMI 0100000D) [...] [ 0.370871] acpi PNP0A08:00: host bridge window expanded to [mem 0x00000000-0xffffffff]; [mem 0x000a0000-0x000bffff] ignored [ 0.370880] acpi PNP0A08:00: host bridge window expanded to [mem 0x00000000-0xffffffff]; [mem 0x000c0000-0x000dffff] ignored [ 0.370887] acpi PNP0A08:00: host bridge window expanded to [mem 0x00000000-0xffffffff]; [mem 0x000e0000-0x000fffff] ignored [ 0.370893] acpi PNP0A08:00: host bridge window expanded to [mem 0x00000000-0xffffffff]; [mem 0x7d000001-0x7f000000] ignored [ 0.370900] acpi PNP0A08:00: host bridge window expanded to [mem 0x00000000-0xffffffff]; [mem 0x00000000-0xffffffff] ignored [...] Which I don't get without overriding the DSDT. Full dmesg here: http://ao2.it/tmp/ACPI_DSDT_override/dmesg_DSDT_override.log The dmesg with the original DSDT here: http://ao2.it/tmp/ACPI_DSDT_override/dmesg_original_DSDT.log These are the steps to reproduce the issue: 1. Extract the DSDT with acpidump; 2. Build an initrd with the intent to override the DSDT with the very same extracted at 1., no modifications whatsoever. The initrd is built just like explained in Documentation/acpi/initrd_table_override.txt; 3. Boot with the modified initrd. I did the test with the _unmodified_ DSDT to exclude errors on my side when decompiling, editing and recompiling the DSDT table. Can anyone else reproduce that? Thanks, Antonio P.S. Please CC me on reply, I am not subscribed to linux-acpi. -- Antonio Ospite http://ao2.it A: Because it messes up the order in which people normally read text. See http://en.wikipedia.org/wiki/Posting_style Q: Why is top-posting such a bad thing? -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
