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authorZachary Amsden <zach@vmware.com>2008-12-13 12:36:58 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-14 16:24:38 -0800
commitae8d04e2ecbb233926860e9ce145eac19c7835dc (patch)
treec6553749f2428e6b828af9b5a165c0ce31cb71f6 /arch/x86/kernel/vmi_32.c
parentca7e716c7833aeaeb8fedd6d004c5f5d5e14d325 (diff)
downloadlinux-linaro-android-ae8d04e2ecbb233926860e9ce145eac19c7835dc.tar.gz
x86 Fix VMI crash on boot in 2.6.28-rc8
VMI initialiation can relocate the fixmap, causing early_ioremap to malfunction if it is initialized before the relocation. To fix this, VMI activation is split into two phases; the detection, which must happen before setting up ioremap, and the activation, which must happen after parsing early boot parameters. This fixes a crash on boot when VMI is enabled under VMware. Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/kernel/vmi_32.c')
-rw-r--r--arch/x86/kernel/vmi_32.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index 8b6c393ab9f..22fd6577156 100644
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -960,8 +960,6 @@ static inline int __init activate_vmi(void)
void __init vmi_init(void)
{
- unsigned long flags;
-
if (!vmi_rom)
probe_vmi_rom();
else
@@ -973,13 +971,21 @@ void __init vmi_init(void)
reserve_top_address(-vmi_rom->virtual_top);
- local_irq_save(flags);
- activate_vmi();
-
#ifdef CONFIG_X86_IO_APIC
/* This is virtual hardware; timer routing is wired correctly */
no_timer_check = 1;
#endif
+}
+
+void vmi_activate(void)
+{
+ unsigned long flags;
+
+ if (!vmi_rom)
+ return;
+
+ local_irq_save(flags);
+ activate_vmi();
local_irq_restore(flags & X86_EFLAGS_IF);
}