From: Arnd Bergmann <a...@arndb.de> I've updated my RFC patches based on the feedback, changing mainly the powerpc code.
I submitted a patch to remove KVM support for x86-32 hosts earlier this month, but there were still concerns that this might be useful for testing 32-bit host in general, as that remains supported on three other architectures. I have gone through those three now and prepared similar patches, as all of them seem to be equally obsolete. Support for 32-bit KVM host on Arm hardware was dropped back in 2020 because of lack of users, despite Cortex-A7/A15/A17 based SoCs being much more widely deployed than the other virtualization capable 32-bit CPUs (Intel Core Duo/Silverthorne, PowerPC e300/e500/e600, MIPS P5600) combined. I hope this can get merged through the KVM tree as a whole series. Arnd --- v2 changes: - rebase to kvm #next branch - improve changelog text for x86 - many updates for powerpc, thanks to Christophe Leroy for suggestions Link: https://lore.kernel.org/lkml/z1b1phcpbiywl...@google.com/ Link: https://lore.kernel.org/lkml/20241212125516.467123-1-a...@kernel.org/ Cc: Thomas Bogendoerfer <tsbog...@alpha.franken.de> Cc: Huacai Chen <chenhua...@kernel.org> Cc: Jiaxun Yang <jiaxun.y...@flygoat.com> Cc: Michael Ellerman <m...@ellerman.id.au> Cc: Nicholas Piggin <npig...@gmail.com> Cc: Christophe Leroy <christophe.le...@csgroup.eu> Cc: Naveen N Rao <nav...@kernel.org> Cc: Madhavan Srinivasan <ma...@linux.ibm.com> Cc: Alexander Graf <g...@amazon.com> Cc: Crystal Wood <crw...@redhat.com> Cc: Anup Patel <a...@brainfault.org> Cc: Atish Patra <ati...@atishpatra.org> Cc: Paul Walmsley <paul.walms...@sifive.com> Cc: Palmer Dabbelt <pal...@dabbelt.com> Cc: Albert Ou <a...@eecs.berkeley.edu> Cc: Sean Christopherson <sea...@google.com> Cc: Paolo Bonzini <pbonz...@redhat.com> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Ingo Molnar <mi...@redhat.com> Cc: Borislav Petkov <b...@alien8.de> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: x...@kernel.org Cc: "H. Peter Anvin" <h...@zytor.com> Cc: Vitaly Kuznetsov <vkuzn...@redhat.com> Cc: David Woodhouse <dw...@infradead.org> Cc: Paul Durrant <p...@xen.org> Cc: Marc Zyngier <m...@kernel.org> Cc: "A. Wilcox" <awil...@wilcox-tech.com> Cc: linux-ker...@vger.kernel.org Cc: linux-m...@vger.kernel.org Cc: k...@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: kvm-ri...@lists.infradead.org Cc: linux-ri...@lists.infradead.org Arnd Bergmann (5): mips: kvm: drop support for 32-bit hosts riscv: kvm: drop 32-bit host support powerpc: kvm: drop 32-bit booke powerpc: kvm: drop 32-bit book3s x86: kvm drop 32-bit host support MAINTAINERS | 2 +- arch/mips/Kconfig | 3 - arch/mips/include/asm/kvm_host.h | 4 - arch/mips/kvm/Kconfig | 1 + arch/mips/kvm/emulate.c | 8 - arch/mips/kvm/msa.S | 12 - arch/mips/kvm/vz.c | 22 - arch/powerpc/include/asm/kvm_book3s.h | 17 - arch/powerpc/include/asm/kvm_book3s_32.h | 36 -- arch/powerpc/include/asm/kvm_book3s_asm.h | 10 - arch/powerpc/include/asm/kvm_booke.h | 4 - arch/powerpc/include/asm/kvm_booke_hv_asm.h | 2 - arch/powerpc/include/asm/kvm_host.h | 2 +- arch/powerpc/include/asm/kvm_ppc.h | 2 +- arch/powerpc/include/asm/processor.h | 3 - arch/powerpc/kernel/asm-offsets.c | 21 +- arch/powerpc/kernel/head_32.h | 10 - arch/powerpc/kernel/head_85xx.S | 14 - arch/powerpc/kernel/head_book3s_32.S | 5 - arch/powerpc/kernel/head_booke.h | 39 -- arch/powerpc/kvm/Kconfig | 44 +- arch/powerpc/kvm/Makefile | 30 -- arch/powerpc/kvm/book3s.c | 18 - arch/powerpc/kvm/book3s_32_mmu_host.c | 396 -------------- arch/powerpc/kvm/book3s_emulate.c | 37 -- arch/powerpc/kvm/book3s_interrupts.S | 11 - arch/powerpc/kvm/book3s_mmu_hpte.c | 12 - arch/powerpc/kvm/book3s_pr.c | 122 +---- arch/powerpc/kvm/book3s_rmhandlers.S | 110 ---- arch/powerpc/kvm/book3s_segment.S | 30 +- arch/powerpc/kvm/booke.c | 268 ---------- arch/powerpc/kvm/booke.h | 8 - arch/powerpc/kvm/booke_emulate.c | 44 -- arch/powerpc/kvm/booke_interrupts.S | 535 ------------------- arch/powerpc/kvm/bookehv_interrupts.S | 102 ---- arch/powerpc/kvm/e500.c | 553 -------------------- arch/powerpc/kvm/e500.h | 40 -- arch/powerpc/kvm/e500_emulate.c | 100 ---- arch/powerpc/kvm/e500_mmu_host.c | 54 -- arch/powerpc/kvm/e500mc.c | 5 +- arch/powerpc/kvm/emulate.c | 2 - arch/powerpc/kvm/powerpc.c | 2 - arch/powerpc/kvm/trace_booke.h | 14 - arch/riscv/kvm/Kconfig | 2 +- arch/riscv/kvm/aia.c | 105 ---- arch/riscv/kvm/aia_imsic.c | 34 -- arch/riscv/kvm/mmu.c | 8 - arch/riscv/kvm/vcpu_exit.c | 4 - arch/riscv/kvm/vcpu_insn.c | 12 - arch/riscv/kvm/vcpu_sbi_pmu.c | 8 - arch/riscv/kvm/vcpu_sbi_replace.c | 4 - arch/riscv/kvm/vcpu_sbi_v01.c | 4 - arch/riscv/kvm/vcpu_timer.c | 20 - arch/x86/kvm/Kconfig | 6 +- arch/x86/kvm/Makefile | 4 +- arch/x86/kvm/cpuid.c | 2 +- arch/x86/kvm/emulate.c | 34 +- arch/x86/kvm/fpu.h | 4 - arch/x86/kvm/hyperv.c | 5 +- arch/x86/kvm/i8254.c | 4 - arch/x86/kvm/kvm_cache_regs.h | 2 - arch/x86/kvm/kvm_emulate.h | 8 - arch/x86/kvm/lapic.c | 4 - arch/x86/kvm/mmu.h | 4 - arch/x86/kvm/mmu/mmu.c | 134 ----- arch/x86/kvm/mmu/mmu_internal.h | 9 - arch/x86/kvm/mmu/paging_tmpl.h | 9 - arch/x86/kvm/mmu/spte.h | 5 - arch/x86/kvm/mmu/tdp_mmu.h | 4 - arch/x86/kvm/smm.c | 19 - arch/x86/kvm/svm/sev.c | 2 - arch/x86/kvm/svm/svm.c | 23 +- arch/x86/kvm/svm/vmenter.S | 20 - arch/x86/kvm/trace.h | 4 - arch/x86/kvm/vmx/main.c | 2 - arch/x86/kvm/vmx/nested.c | 24 +- arch/x86/kvm/vmx/vmcs.h | 2 - arch/x86/kvm/vmx/vmenter.S | 25 +- arch/x86/kvm/vmx/vmx.c | 117 +---- arch/x86/kvm/vmx/vmx.h | 23 +- arch/x86/kvm/vmx/vmx_ops.h | 7 - arch/x86/kvm/vmx/x86_ops.h | 2 - arch/x86/kvm/x86.c | 74 +-- arch/x86/kvm/x86.h | 4 - arch/x86/kvm/xen.c | 61 +-- 85 files changed, 66 insertions(+), 3536 deletions(-) delete mode 100644 arch/powerpc/include/asm/kvm_book3s_32.h delete mode 100644 arch/powerpc/kvm/book3s_32_mmu_host.c delete mode 100644 arch/powerpc/kvm/booke_interrupts.S delete mode 100644 arch/powerpc/kvm/e500.c -- 2.39.5