diff options
| author | Juergen Gross <jgross@suse.com> | 2020-06-29 11:35:39 +0300 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2020-08-11 09:26:48 +0300 |
| commit | a13f2ef168cb2a033a284eb841bcc481ffbc90cf (patch) | |
| tree | dcbd853b5274f1e92a48d66bfb77b5c718968b85 /arch/x86/xen/smp_pv.c | |
| parent | d7b461caa6cc64dd190577b46b0ec892a8d5e7c0 (diff) | |
| download | linux-a13f2ef168cb2a033a284eb841bcc481ffbc90cf.tar.xz | |
x86/xen: remove 32-bit Xen PV guest support
Xen is requiring 64-bit machines today and since Xen 4.14 it can be
built without 32-bit PV guest support. There is no need to carry the
burden of 32-bit PV guest support in the kernel any longer, as new
guests can be either HVM or PVH, or they can use a 64 bit kernel.
Remove the 32-bit Xen PV support from the kernel.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'arch/x86/xen/smp_pv.c')
| -rw-r--r-- | arch/x86/xen/smp_pv.c | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/arch/x86/xen/smp_pv.c b/arch/x86/xen/smp_pv.c index 171aff1b11f2..9218aa6ab28e 100644 --- a/arch/x86/xen/smp_pv.c +++ b/arch/x86/xen/smp_pv.c @@ -212,15 +212,6 @@ static void __init xen_pv_smp_prepare_boot_cpu(void) * sure the old memory can be recycled. */ make_lowmem_page_readwrite(xen_initial_gdt); -#ifdef CONFIG_X86_32 - /* - * Xen starts us with XEN_FLAT_RING1_DS, but linux code - * expects __USER_DS - */ - loadsegment(ds, __USER_DS); - loadsegment(es, __USER_DS); -#endif - xen_filter_cpu_maps(); xen_setup_vcpu_info_placement(); @@ -301,10 +292,6 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle) gdt = get_cpu_gdt_rw(cpu); -#ifdef CONFIG_X86_32 - ctxt->user_regs.fs = __KERNEL_PERCPU; - ctxt->user_regs.gs = __KERNEL_STACK_CANARY; -#endif memset(&ctxt->fpu_ctxt, 0, sizeof(ctxt->fpu_ctxt)); /* @@ -342,12 +329,7 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle) ctxt->kernel_ss = __KERNEL_DS; ctxt->kernel_sp = task_top_of_stack(idle); -#ifdef CONFIG_X86_32 - ctxt->event_callback_cs = __KERNEL_CS; - ctxt->failsafe_callback_cs = __KERNEL_CS; -#else ctxt->gs_base_kernel = per_cpu_offset(cpu); -#endif ctxt->event_callback_eip = (unsigned long)xen_asm_exc_xen_hypervisor_callback; ctxt->failsafe_callback_eip = |