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xen-devel
[Xen-devel] [PATCH 09/18] xen: pre-initialize legacy irqs early
From: Ian Campbell <ian.campbell@xxxxxxxxxx>
Impact: ISA/legacy device compat
Various legacy devices, such as IDE, assume their legacy interrupts are
already initialized and are immediately usable. Pre-initialize all the
legacy interrupts.
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
---
arch/x86/xen/pci.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/arch/x86/xen/pci.c b/arch/x86/xen/pci.c
index 0f3663c..fb408ce 100644
--- a/arch/x86/xen/pci.c
+++ b/arch/x86/xen/pci.c
@@ -62,9 +62,9 @@ int xen_register_gsi(u32 gsi, int triggering, int polarity)
void __init xen_setup_pirqs(void)
{
-#ifdef CONFIG_ACPI
int irq;
+#ifdef CONFIG_ACPI
/*
* Set up acpi interrupt in acpi_gbl_FADT.sci_interrupt.
*/
@@ -76,4 +76,8 @@ void __init xen_setup_pirqs(void)
/* Blerk. */
acpi_gbl_FADT.sci_interrupt = irq;
#endif
+
+ /* Pre-allocate legacy irqs */
+ for (irq=0; irq < NR_IRQS_LEGACY; irq++)
+ xen_allocate_pirq(irq);
}
--
1.6.0.6
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- [Xen-devel] [GIT PULL] xen: apic support for dom0, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 18/18] xen/apic: add pin argument to setup_ioapic_entry(), Jeremy Fitzhardinge
- [Xen-devel] [PATCH 17/18] xen/apic: checkpatch cleanups, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 03/18] xen: create dummy ioapic mapping, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 08/18] xen: bind pirq to vector and event channel, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 04/18] xen: implement pirq type event channels, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 06/18] xen/apic: identity map gsi->irqs, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 07/18] xen: direct irq registration to pirq event channels, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 09/18] xen: pre-initialize legacy irqs early,
Jeremy Fitzhardinge <=
- [Xen-devel] [PATCH 10/18] xen: don't setup acpi interrupt unless there is one, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 11/18] xen: use acpi_get_override_irq() to get triggering for legacy irqs, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 12/18] xen: initialize irq 0 too, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 16/18] xen: disable MSI, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 05/18] x86/io_apic: add get_nr_irqs_gsi(), Jeremy Fitzhardinge
- [Xen-devel] [PATCH 13/18] xen: dynamically allocate irq & event structures, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 01/18] xen/dom0: handle acpi lapic parsing in Xen dom0, Jeremy Fitzhardinge
- [Xen-devel] [PATCH 15/18] xen: fix legacy irq setup, make ioapic-less machines work., Jeremy Fitzhardinge
- [Xen-devel] [PATCH 02/18] xen: hook io_apic read/write operations, Jeremy Fitzhardinge
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