The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86 requires 64-bit support and with Grub2 now supporting PVH officially since version 2.04 there is no need to keep 32-bit PV guest support alive in the Linux kernel. Additionally Meltdown mitigation is not available in the kernel running as 32-bit PV guest, so dropping this mode makes sense from security point of view, too. Juergen Gross (2): x86/xen: remove 32-bit Xen PV guest support x86/paravirt: remove 32-bit support from PARAVIRT_XXL arch/x86/entry/entry_32.S | 93 -------- arch/x86/entry/vdso/vdso32/vclock_gettime.c | 1 + arch/x86/include/asm/paravirt.h | 105 +-------- arch/x86/include/asm/paravirt_types.h | 20 -- arch/x86/include/asm/pgtable-3level_types.h | 5 - arch/x86/include/asm/proto.h | 2 +- arch/x86/include/asm/segment.h | 2 +- arch/x86/include/asm/traps.h | 2 +- arch/x86/kernel/cpu/common.c | 8 - arch/x86/kernel/paravirt.c | 17 -- arch/x86/kernel/paravirt_patch_32.c | 36 +-- arch/x86/xen/Kconfig | 3 +- arch/x86/xen/Makefile | 4 +- arch/x86/xen/apic.c | 17 -- arch/x86/xen/enlighten_pv.c | 45 +--- arch/x86/xen/mmu_pv.c | 326 +++------------------------- arch/x86/xen/p2m.c | 4 - arch/x86/xen/setup.c | 44 +--- arch/x86/xen/smp_pv.c | 19 +- arch/x86/xen/xen-asm.S | 14 -- arch/x86/xen/xen-asm_32.S | 207 ------------------ arch/x86/xen/xen-head.S | 6 - arch/x86/xen/xen-ops.h | 5 - drivers/xen/Kconfig | 4 +- 24 files changed, 57 insertions(+), 932 deletions(-) delete mode 100644 arch/x86/xen/xen-asm_32.S -- 2.16.4 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
