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- Add a new Intel Arrow Lake CPU model number

Browse Source 
- Fix a confusion about how to check the version of the ACPI spec which
   supports a "online capable" bit in the MADT table which lead to
   a bunch of boot breakages with Zen1 systems and VMs
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Merge tag 'x86_urgent_for_v6.3_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Add a new Intel Arrow Lake CPU model number

 - Fix a confusion about how to check the version of the ACPI spec which
   supports a "online capable" bit in the MADT table which lead to a
   bunch of boot breakages with Zen1 systems and VMs

* tag 'x86_urgent_for_v6.3_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Add model number for Intel Arrow Lake processor
  x86/acpi/boot: Correct acpi_is_processor_usable() check
  x86/ACPI/boot: Use FADT version to check support for online capable
This commit is contained in:
Linus Torvalds 2023-04-09 10:00:16 -07:00
commit 4ba115e269
2 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/intel-family.h
View File

@ -125,6 +125,8 @@
#define INTEL_FAM6_LUNARLAKE_M 0xBD
#define INTEL_FAM6_ARROWLAKE 0xC6
/* "Small Core" Processors (Atom/E-Core) */
#define INTEL_FAM6_ATOM_BONNELL 0x1C /* Diamondville, Pineview */

9
arch/x86/kernel/acpi/boot.c
View File

@ -146,7 +146,11 @@ static int __init acpi_parse_madt(struct acpi_table_header *table)
pr_debug("Local APIC address 0x%08x\n", madt->address);
}
if (madt->header.revision >= 5)
/* ACPI 6.3 and newer support the online capable bit. */
if (acpi_gbl_FADT.header.revision > 6 ||
(acpi_gbl_FADT.header.revision == 6 &&
acpi_gbl_FADT.minor_revision >= 3))
acpi_support_online_capable = true;
default_acpi_madt_oem_check(madt->header.oem_id,
@ -193,7 +197,8 @@ static bool __init acpi_is_processor_usable(u32 lapic_flags)
if (lapic_flags & ACPI_MADT_ENABLED)
return true;
if (acpi_support_online_capable && (lapic_flags & ACPI_MADT_ONLINE_CAPABLE))
if (!acpi_support_online_capable ||
(lapic_flags & ACPI_MADT_ONLINE_CAPABLE))
return true;
return false;