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author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2017-03-14 18:35:39 +0100 |
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committer | Juergen Gross <jgross@suse.com> | 2017-05-02 10:58:23 +0200 |
commit | 481d66325dfc2a6b4f5e729b64ad144383b63fad (patch) | |
tree | e7f72dfc3710e56be4a4337d127e9341998a336c /arch/x86/xen/enlighten.c | |
parent | x86/xen: add CONFIG_XEN_PV to Kconfig (diff) | |
download | linux-481d66325dfc2a6b4f5e729b64ad144383b63fad.tar.xz linux-481d66325dfc2a6b4f5e729b64ad144383b63fad.zip |
x86/xen: split off enlighten_pvh.c
Create enlighten_pvh.c by splitting off PVH related code from enlighten.c,
put it under CONFIG_XEN_PVH.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'arch/x86/xen/enlighten.c')
-rw-r--r-- | arch/x86/xen/enlighten.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 7b55408ff0ab..2e392e9d83cb 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -180,20 +180,6 @@ struct tls_descs { */ static DEFINE_PER_CPU(struct tls_descs, shadow_tls_desc); -#ifdef CONFIG_XEN_PVH -/* - * PVH variables. - * - * xen_pvh and pvh_bootparams need to live in data segment since they - * are used after startup_{32|64}, which clear .bss, are invoked. - */ -bool xen_pvh __attribute__((section(".data"))) = 0; -struct boot_params pvh_bootparams __attribute__((section(".data"))); - -struct hvm_start_info pvh_start_info; -unsigned int pvh_start_info_sz = sizeof(pvh_start_info); -#endif - static void clamp_max_cpus(void) { #ifdef CONFIG_SMP @@ -1674,100 +1660,6 @@ asmlinkage __visible void __init xen_start_kernel(void) #endif } -#ifdef CONFIG_XEN_PVH - -static void xen_pvh_arch_setup(void) -{ -#ifdef CONFIG_ACPI - /* Make sure we don't fall back to (default) ACPI_IRQ_MODEL_PIC. */ - if (nr_ioapics == 0) - acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM; -#endif -} - -static void __init init_pvh_bootparams(void) -{ - struct xen_memory_map memmap; - unsigned int i; - int rc; - - memset(&pvh_bootparams, 0, sizeof(pvh_bootparams)); - - memmap.nr_entries = ARRAY_SIZE(pvh_bootparams.e820_table); - set_xen_guest_handle(memmap.buffer, pvh_bootparams.e820_table); - rc = HYPERVISOR_memory_op(XENMEM_memory_map, &memmap); - if (rc) { - xen_raw_printk("XENMEM_memory_map failed (%d)\n", rc); - BUG(); - } - - if (memmap.nr_entries < E820_MAX_ENTRIES_ZEROPAGE - 1) { - pvh_bootparams.e820_table[memmap.nr_entries].addr = - ISA_START_ADDRESS; - pvh_bootparams.e820_table[memmap.nr_entries].size = - ISA_END_ADDRESS - ISA_START_ADDRESS; - pvh_bootparams.e820_table[memmap.nr_entries].type = - E820_TYPE_RESERVED; - memmap.nr_entries++; - } else - xen_raw_printk("Warning: Can fit ISA range into e820\n"); - - pvh_bootparams.e820_entries = memmap.nr_entries; - for (i = 0; i < pvh_bootparams.e820_entries; i++) - e820__range_add(pvh_bootparams.e820_table[i].addr, - pvh_bootparams.e820_table[i].size, - pvh_bootparams.e820_table[i].type); - - e820__update_table(e820_table); - - pvh_bootparams.hdr.cmd_line_ptr = - pvh_start_info.cmdline_paddr; - - /* The first module is always ramdisk. */ - if (pvh_start_info.nr_modules) { - struct hvm_modlist_entry *modaddr = - __va(pvh_start_info.modlist_paddr); - pvh_bootparams.hdr.ramdisk_image = modaddr->paddr; - pvh_bootparams.hdr.ramdisk_size = modaddr->size; - } - - /* - * See Documentation/x86/boot.txt. - * - * Version 2.12 supports Xen entry point but we will use default x86/PC - * environment (i.e. hardware_subarch 0). - */ - pvh_bootparams.hdr.version = 0x212; - pvh_bootparams.hdr.type_of_loader = (9 << 4) | 0; /* Xen loader */ -} - -/* - * This routine (and those that it might call) should not use - * anything that lives in .bss since that segment will be cleared later. - */ -void __init xen_prepare_pvh(void) -{ - u32 msr; - u64 pfn; - - if (pvh_start_info.magic != XEN_HVM_START_MAGIC_VALUE) { - xen_raw_printk("Error: Unexpected magic value (0x%08x)\n", - pvh_start_info.magic); - BUG(); - } - - xen_pvh = 1; - - msr = cpuid_ebx(xen_cpuid_base() + 2); - pfn = __pa(hypercall_page); - wrmsr_safe(msr, (u32)pfn, (u32)(pfn >> 32)); - - init_pvh_bootparams(); - - x86_init.oem.arch_setup = xen_pvh_arch_setup; -} -#endif - void __ref xen_hvm_init_shared_info(void) { int cpu; |