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Subject[PATCH 10/10] x86: jailhouse: Initialize PCI support
Date
From: Jan Kiszka <jan.kiszka@siemens.com>

With this change, PCI devices can be detected and used inside a non-root
cell.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
arch/x86/kernel/jailhouse.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c
index 05459ea0ecc7..e573ea8b0a5f 100644
--- a/arch/x86/kernel/jailhouse.c
+++ b/arch/x86/kernel/jailhouse.c
@@ -18,6 +18,7 @@
#include <asm/hypervisor.h>
#include <asm/i8259.h>
#include <asm/irqdomain.h>
+#include <asm/pci_x86.h>
#include <asm/reboot.h>
#include <asm/setup.h>

@@ -211,6 +212,15 @@ static void __init jailhouse_init_platform(void)

early_memunmap(data, sizeof(*data));

+ pci_probe = 0;
+ pci_direct_init(1);
+
+ /*
+ * There are no bridges on the virtual PCI root bus under Jailhouse,
+ * thus no other way to discover all devices than a full scan.
+ */
+ pcibios_last_bus = 0xff;
+
/*
* Avoid that the kernel complains about missing ACPI tables - there
* are none in a non-root cell.
--
2.12.3
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