search for: ioapic_entries

Hi, on a Nehalem system with VT-d enabled we are seeing strange ACPI-Table contents, especially a corrupted DMAR entry. The hypervisor shows following data on boot: (XEN) ACPI: RSDP 000F80E0, 0024 (r2 PTLTD ) (XEN) ACPI: XSDT BF7C469E, 00D4 (r1 PTLTD XSDT 60000 LTP 0) (XEN) ACPI: FACP BF7C9CC9, 00F4 (r3 FSC TYLERBRG 60000 PTL F4240) (XEN) ACPI: DSDT BF7C4772, 54D3 (r1

...unsigned long flags; + spin_lock_irqsave(&ioapic_lock, flags); + __ioapic_write_entry(apic, pin, raw, e); + spin_unlock_irqrestore(&ioapic_lock, flags); +} + /* * Saves all the IO-APIC RTE's */ @@ -170,12 +216,8 @@ int save_IO_APIC_setup(struct IO_APIC_ro if (!ioapic_entries[apic]) return -ENOMEM; - for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) { - *(((int *)&ioapic_entries[apic][pin])+0) = - __io_apic_read(apic, 0x10+pin*2); - *(((int *)&ioapic_entries[apic][pin])+1) = - __io_...

...unsigned long flags; + spin_lock_irqsave(&ioapic_lock, flags); + __ioapic_write_entry(apic, pin, raw, e); + spin_unlock_irqrestore(&ioapic_lock, flags); +} + /* * Saves all the IO-APIC RTE's */ @@ -170,12 +216,8 @@ int save_IO_APIC_setup(struct IO_APIC_ro if (!ioapic_entries[apic]) return -ENOMEM; - for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) { - *(((int *)&ioapic_entries[apic][pin])+0) = - __io_apic_read(apic, 0x10+pin*2); - *(((int *)&ioapic_entries[apic][pin])+1) = - __io_...

x86:x2apic: Disable x2apic on x86-32 permanently x2apic initialization on x86_32 uses vcpu pointer before it is initialized. As x2apic is unlikely to be used on x86_32, this patch disables x2apic permanently on x86_32. It also asserts the sanity of vcpu pointer before dereference to prevent further misuse. Signed-off-by: Fengzhe Zhang <fengzhe.zhang@intel.com> diff -r 02c0af2bf280