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| author | Ravikiran G Thirumalai <kiran@scalex86.org> | 2008-03-20 00:43:16 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:41:08 +0200 |
| commit | 9f6d8552a9cb49dc556777bbdf7ac8b3d7e18edb (patch) | |
| tree | cb659037f8391656804ab972033de1352fa0b22e /arch/x86/kernel/vsmp_64.c | |
| parent | aa7d8e25eca5deb33eb08013bc78a80514349b40 (diff) | |
| download | op-kernel-dev-9f6d8552a9cb49dc556777bbdf7ac8b3d7e18edb.zip op-kernel-dev-9f6d8552a9cb49dc556777bbdf7ac8b3d7e18edb.tar.gz | |
x86: vSMP: use pvops only if platform has the capability to support it
Re-arrange set_vsmp_pv_ops so that pv_ops are set only if
the platform has capability to support paravirtualized irq ops
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/vsmp_64.c')
| -rw-r--r-- | arch/x86/kernel/vsmp_64.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c index 4a790a5..13bd824 100644 --- a/arch/x86/kernel/vsmp_64.c +++ b/arch/x86/kernel/vsmp_64.c @@ -78,12 +78,6 @@ static void __init set_vsmp_pv_ops(void) void *address; unsigned int cap, ctl, cfg; - pv_irq_ops.irq_disable = vsmp_irq_disable; - pv_irq_ops.irq_enable = vsmp_irq_enable; - pv_irq_ops.save_fl = vsmp_save_fl; - pv_irq_ops.restore_fl = vsmp_restore_fl; - pv_init_ops.patch = vsmp_patch; - /* set vSMP magic bits to indicate vSMP capable kernel */ cfg = read_pci_config(0, 0x1f, 0, PCI_BASE_ADDRESS_0); address = early_ioremap(cfg, 8); @@ -92,7 +86,13 @@ static void __init set_vsmp_pv_ops(void) printk(KERN_INFO "vSMP CTL: capabilities:0x%08x control:0x%08x\n", cap, ctl); if (cap & ctl & (1 << 4)) { - /* Turn on vSMP IRQ fastpath handling (see system.h) */ + /* Setup irq ops and turn on vSMP IRQ fastpath handling */ + pv_irq_ops.irq_disable = vsmp_irq_disable; + pv_irq_ops.irq_enable = vsmp_irq_enable; + pv_irq_ops.save_fl = vsmp_save_fl; + pv_irq_ops.restore_fl = vsmp_restore_fl; + pv_init_ops.patch = vsmp_patch; + ctl &= ~(1 << 4); writel(ctl, address + 4); ctl = readl(address + 4); |
