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Traverse Local x2APIC structures to find all processors

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This commit is contained in:
Rafal Kupiec
2024-06-07 23:05:12 +02:00
parent f36b59c961
commit 2f16f4f613
2 changed files with 57 additions and 15 deletions
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21
xtoskrnl/hl/acpi.c
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@@ -289,18 +289,31 @@ HlpInitializeAcpiSystemInformation(VOID)
while(MadtTable <= ((PUCHAR)Madt + Madt->Header.Length))
{
/* Check if this is a local APIC subtable */
if((((PACPI_MADT_TABLE_LOCAL_APIC)MadtTable)->Header.Type == ACPI_MADT_LOCAL_APIC) &&
(((PACPI_MADT_TABLE_LOCAL_APIC)MadtTable)->Header.Length == sizeof(ACPI_MADT_TABLE_LOCAL_APIC)))
if((((PACPI_MADT_LOCAL_APIC)MadtTable)->Header.Type == ACPI_MADT_TYPE_LOCAL_APIC) &&
(((PACPI_MADT_LOCAL_APIC)MadtTable)->Header.Length == sizeof(ACPI_MADT_LOCAL_APIC)))
{
/* Make sure, this CPU can be enabled */
if(((PACPI_MADT_TABLE_LOCAL_APIC)MadtTable)->LapicFlags & ACPI_MADT_PLAOC_ENABLED)
if(((PACPI_MADT_LOCAL_APIC)MadtTable)->LapicFlags & ACPI_MADT_PLAOC_ENABLED)
{
/* Increment number of CPUs */
CpuCount++;
}
/* Go to the next MADT table */
MadtTable += ((PACPI_MADT_TABLE_LOCAL_APIC)MadtTable)->Header.Length;
MadtTable += ((PACPI_MADT_LOCAL_APIC)MadtTable)->Header.Length;
}
else if((((PACPI_MADT_LOCAL_X2APIC)MadtTable)->Header.Type == ACPI_MADT_TYPE_LOCAL_X2APIC) &&
(((PACPI_MADT_LOCAL_X2APIC)MadtTable)->Header.Length == sizeof(ACPI_MADT_LOCAL_X2APIC)))
{
/* Make sure, this CPU can be enabled */
if(((PACPI_MADT_LOCAL_X2APIC)MadtTable)->LapicFlags & ACPI_MADT_PLAOC_ENABLED)
{
/* Increment number of CPUs */
CpuCount++;
}
/* Go to the next MADT table */
MadtTable += ((PACPI_MADT_LOCAL_X2APIC)MadtTable)->Header.Length;
}
else
{