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android_kernel_xiaomi_sm8350/Documentation/acpi/dsdt-override.txt

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ACPI: Remove ACPI_CUSTOM_DSDT_INITRD option This essentially reverts commit 71fc47a9adf8ee89e5c96a47222915c5485ac437 ("ACPI: basic initramfs DSDT override support"), because the code simply isn't ready. It did ugly things to the init sequence to populate the rootfs image early, but that just ended up showing other problems with the whole approach. The fact is, the VFS layer simply isn't initialized this early, and the relevant ACPI code should either run much later, or this shouldn't be done at all. For 2.6.25, we'll just pick the latter option. We can revisit this concept later if necessary. Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Tilman Schmidt <tilman@imap.cc> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Renninger <trenn@suse.de> Cc: Eric Piel <eric.piel@tremplin-utc.net> Cc: Len Brown <len.brown@intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Markus Gaugusch <dsdt@gaugusch.at> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-15 14:53:32 -04:00
Linux supports a method of overriding the BIOS DSDT:
ACPI: update DSDT override documentation Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-06 19:28:02 -05:00
CONFIG_ACPI_CUSTOM_DSDT builds the image into the kernel.
ACPI: Remove ACPI_CUSTOM_DSDT_INITRD option This essentially reverts commit 71fc47a9adf8ee89e5c96a47222915c5485ac437 ("ACPI: basic initramfs DSDT override support"), because the code simply isn't ready. It did ugly things to the init sequence to populate the rootfs image early, but that just ended up showing other problems with the whole approach. The fact is, the VFS layer simply isn't initialized this early, and the relevant ACPI code should either run much later, or this shouldn't be done at all. For 2.6.25, we'll just pick the latter option. We can revisit this concept later if necessary. Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Tilman Schmidt <tilman@imap.cc> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Renninger <trenn@suse.de> Cc: Eric Piel <eric.piel@tremplin-utc.net> Cc: Len Brown <len.brown@intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Markus Gaugusch <dsdt@gaugusch.at> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-15 14:53:32 -04:00
When to use this method is described in detail on the
ACPI: update DSDT override documentation Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-06 19:28:02 -05:00
Linux/ACPI home page:
http://www.lesswatts.org/projects/acpi/overridingDSDT.php
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