[Xen-devel] [PATCH] xen/apic: use xen_apic for all pv guests, not just dom0.

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

c3dd7941354f "xen/apic: Provide an 'apic_xen' to set the override the
apic->[read|write] for all cases" caused my 32 bit domU to panic with:
[    0.000000] Kernel panic - not syncing: Didn't find an APIC driver
[    0.000000] Pid: 0, comm: swapper Not tainted 
2.6.32.41-x86_32p-xenU-01177-g22982d8-dirty #233
[    0.000000] Call Trace:
[    0.000000]  [<c11f8284>] ? printk+0xf/0x13
[    0.000000]  [<c11f81b8>] panic+0x39/0xf6
[    0.000000]  [<c1308f60>] generic_apic_probe+0x72/0x8a
[    0.000000]  [<c1301cd3>] setup_arch+0x90f/0x966
[    0.000000]  [<c102e5c1>] ? vprintk+0x368/0x38a
[    0.000000]  [<c104b9bb>] ? lockdep_init_map+0x87/0x40f
[    0.000000]  [<c104aed9>] ? debug_check_no_locks_freed+0x122/0x147
[    0.000000]  [<c12fc5ca>] start_kernel+0x90/0x30e
[    0.000000]  [<c12fc0a8>] i386_start_kernel+0x97/0x9e
[    0.000000]  [<c12ff372>] xen_start_kernel+0x4ce/0x4d6

Add the APIC override for PV guests as well as dom0.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 arch/x86/xen/enlighten.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 0493093..7cb12e0 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -761,7 +761,7 @@ static __init int xen_safe_flat_acpi_madt_oem_check(char 
*oem_id,
 
 static __init int xen_safe_probe(void) {
 
-       if (!xen_initial_domain())
+       if (!xen_pv_domain())
                return 0;
 
        return 1;
-- 
1.7.2.5


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