Merge branches 'x86/apic', 'x86/asm', 'x86/mm' and 'x86/platform' into x86/core,...

[linux-2.6-block.git] / arch / x86 / xen / enlighten.c

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 94578efd3067f0a0fd86c36c5b3be07eced3d509..a8f57a94785ab714d63379c3f876b7d7d28f9130 100644 (file)
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1181,10 +1181,11 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = {
        .read_tscp = native_read_tscp,
 
        .iret = xen_iret,
-       .irq_enable_sysexit = xen_sysexit,
 #ifdef CONFIG_X86_64
        .usergs_sysret32 = xen_sysret32,
        .usergs_sysret64 = xen_sysret64,
+#else
+       .irq_enable_sysexit = xen_sysexit,
 #endif
 
        .load_tr_desc = paravirt_nop,
@@ -1467,6 +1468,7 @@ asmlinkage __visible void __init xen_start_kernel(void)
 {
        struct physdev_set_iopl set_iopl;
        unsigned long initrd_start = 0;
+       u64 pat;
        int rc;
 
        if (!xen_start_info)
@@ -1574,8 +1576,8 @@ asmlinkage __visible void __init xen_start_kernel(void)
         * Modify the cache mode translation tables to match Xen's PAT
         * configuration.
         */
-
-       pat_init_cache_modes();
+       rdmsrl(MSR_IA32_CR_PAT, pat);
+       pat_init_cache_modes(pat);
 
        /* keep using Xen gdt for now; no urgent need to change it */
 
@@ -1760,6 +1762,9 @@ static struct notifier_block xen_hvm_cpu_notifier = {
 
 static void __init xen_hvm_guest_init(void)
 {
+       if (xen_pv_domain())
+               return;
+
        init_hvm_pv_info();
 
        xen_hvm_init_shared_info();
@@ -1775,6 +1780,7 @@ static void __init xen_hvm_guest_init(void)
        xen_hvm_init_time_ops();
        xen_hvm_init_mmu_ops();
 }
+#endif
 
 static bool xen_nopv = false;
 static __init int xen_parse_nopv(char *arg)
@@ -1784,14 +1790,11 @@ static __init int xen_parse_nopv(char *arg)
 }
 early_param("xen_nopv", xen_parse_nopv);
 
-static uint32_t __init xen_hvm_platform(void)
+static uint32_t __init xen_platform(void)
 {
        if (xen_nopv)
                return 0;
 
-       if (xen_pv_domain())
-               return 0;
-
        return xen_cpuid_base();
 }
 
@@ -1809,11 +1812,19 @@ bool xen_hvm_need_lapic(void)
 }
 EXPORT_SYMBOL_GPL(xen_hvm_need_lapic);
 
-const struct hypervisor_x86 x86_hyper_xen_hvm __refconst = {
-       .name                   = "Xen HVM",
-       .detect                 = xen_hvm_platform,
+static void xen_set_cpu_features(struct cpuinfo_x86 *c)
+{
+       if (xen_pv_domain())
+               clear_cpu_bug(c, X86_BUG_SYSRET_SS_ATTRS);
+}
+
+const struct hypervisor_x86 x86_hyper_xen = {
+       .name                   = "Xen",
+       .detect                 = xen_platform,
+#ifdef CONFIG_XEN_PVHVM
        .init_platform          = xen_hvm_guest_init,
+#endif
        .x2apic_available       = xen_x2apic_para_available,
+       .set_cpu_features       = xen_set_cpu_features,
 };
-EXPORT_SYMBOL(x86_hyper_xen_hvm);
-#endif
+EXPORT_SYMBOL(x86_hyper_xen);