diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2017-11-27 11:11:54 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-01-14 23:11:57 +0300 |
| commit | a0c01e4bb92d085462c293091a521cb9e7000371 (patch) | |
| tree | fddf35d061efc535def2b4cfcd914d86ae2664a1 /arch/x86/kernel/jailhouse.c | |
| parent | cf878e169d37b596de41322291523951540984c1 (diff) | |
| download | linux-a0c01e4bb92d085462c293091a521cb9e7000371.tar.xz | |
x86/jailhouse: Initialize PCI support
With this change, PCI devices can be detected and used inside a non-root
cell.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: jailhouse-dev@googlegroups.com
Link: https://lkml.kernel.org/r/e8d19494b96b68a749bcac514795d864ad9c28c3.1511770314.git.jan.kiszka@siemens.com
Diffstat (limited to 'arch/x86/kernel/jailhouse.c')
| -rw-r--r-- | arch/x86/kernel/jailhouse.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c index 01d5b06a42bc..d6d5976a9b51 100644 --- a/arch/x86/kernel/jailhouse.c +++ b/arch/x86/kernel/jailhouse.c @@ -16,6 +16,7 @@ #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> @@ -106,6 +107,19 @@ static void jailhouse_no_restart(void) machine_halt(); } +static int __init jailhouse_pci_arch_init(void) +{ + 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; + + return 0; +} + static void __init jailhouse_init_platform(void) { u64 pa_data = boot_params.hdr.setup_data; @@ -115,6 +129,7 @@ static void __init jailhouse_init_platform(void) x86_init.irqs.pre_vector_init = x86_init_noop; x86_init.timers.timer_init = jailhouse_timer_init; x86_init.mpparse.get_smp_config = jailhouse_get_smp_config; + x86_init.pci.arch_init = jailhouse_pci_arch_init; x86_platform.calibrate_cpu = jailhouse_get_tsc; x86_platform.calibrate_tsc = jailhouse_get_tsc; @@ -157,6 +172,8 @@ static void __init jailhouse_init_platform(void) precalibrated_tsc_khz = setup_data.tsc_khz; + pci_probe = 0; + /* * Avoid that the kernel complains about missing ACPI tables - there * are none in a non-root cell. |