https://bugzilla.kernel.org/show_bug.cgi?id=212643
Bug ID: 212643 Summary: DSDT table not overridden by custom table in initrd Product: ACPI Version: 2.5 Kernel Version: 5.12-rc6 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Config-Tables Assignee: acpi_config-tab...@kernel-bugs.osdl.org Reporter: zant...@yahoo.de Regression: Yes I am using a modified DSDT table via initrd as described in https://www.kernel.org/doc/Documentation/acpi/initrd_table_override.txt for a Lenovo Yoga 7i. It worked fine with the stable 5.11.11 kernel, but updating to 5.11.12 broke it and the problem persists in mainline 5.12-rc6. Through bisection I found that commit 1a1c130ab7575498eed5bcf7220037ae09cd1f8a (ACPI: tables: x86: Reserve memory occupied by ACPI tables) is responsible for this. Before this commit, dmesg | grep DSDT: [ 0.007383] ACPI: DSDT ACPI table found in initrd [kernel/firmware/acpi/dsdt.aml][0x3ec82] [ 0.007449] ACPI: Table Upgrade: override [DSDT-LENOVO-CB-01 ] [ 0.007450] ACPI: DSDT 0x0000000045B94000 Physical table override, new table: 0x000000004259F000 [ 0.007452] ACPI: DSDT 0x000000004259F000 03EC82 (v02 LENOVO CB-01 00000003 INTL 20210105) Since then: [ 0.007162] ACPI: DSDT 0x0000000045B94000 03ED79 (v02 LENOVO CB-01 00000002 ACPI 00040000) [ 0.007223] ACPI: Reserving DSDT table memory at [mem 0x45b94000-0x45bd2d78] [ 0.007492] ACPI: DSDT ACPI table found in initrd [kernel/firmware/acpi/dsdt.aml][0x3ec82] [ 0.007545] ACPI: Table Upgrade: install [DSDT-LENOVO-CB-01 ] [ 0.007547] ACPI: DSDT 0x000000004259F000 03EC82 (v02 LENOVO CB-01 00000003 INTL 20210105) The DSDT table is installed but it does not override the original one. In /sys/firmware/acpi/tables, I now have files DSDT1 and DSDT2 (one being the original and the other one the override), where it used to be only one file, DSDT. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla