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Subject[PATCH 0/2] Remove 32-bit Xen PV guest support
Date
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

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