diff options
| author | Juergen Gross <jgross@suse.com> | 2020-06-29 10:35:39 +0200 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2020-08-11 08:26:48 +0200 |
| commit | a13f2ef168cb2a033a284eb841bcc481ffbc90cf (patch) | |
| tree | dcbd853b5274f1e92a48d66bfb77b5c718968b85 /arch/x86/kernel/head_32.S | |
| parent | d7b461caa6cc64dd190577b46b0ec892a8d5e7c0 (diff) | |
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/kernel/head_32.S')
| -rw-r--r-- | arch/x86/kernel/head_32.S | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index f66a6b90f954..7ed84c282233 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -134,38 +134,7 @@ SYM_CODE_START(startup_32) movl %eax,pa(initial_page_table+0xffc) #endif -#ifdef CONFIG_PARAVIRT - /* This is can only trip for a broken bootloader... */ - cmpw $0x207, pa(boot_params + BP_version) - jb .Ldefault_entry - - /* Paravirt-compatible boot parameters. Look to see what architecture - we're booting under. */ - movl pa(boot_params + BP_hardware_subarch), %eax - cmpl $num_subarch_entries, %eax - jae .Lbad_subarch - - movl pa(subarch_entries)(,%eax,4), %eax - subl $__PAGE_OFFSET, %eax - jmp *%eax - -.Lbad_subarch: -SYM_INNER_LABEL_ALIGN(xen_entry, SYM_L_WEAK) - /* Unknown implementation; there's really - nothing we can do at this point. */ - ud2a - - __INITDATA - -subarch_entries: - .long .Ldefault_entry /* normal x86/PC */ - .long xen_entry /* Xen hypervisor */ - .long .Ldefault_entry /* Moorestown MID */ -num_subarch_entries = (. - subarch_entries) / 4 -.previous -#else jmp .Ldefault_entry -#endif /* CONFIG_PARAVIRT */ SYM_CODE_END(startup_32) #ifdef CONFIG_HOTPLUG_CPU |