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authorMarc Zyngier <maz@kernel.org>2020-01-25 01:42:15 +0300
committerMarc Zyngier <maz@kernel.org>2020-03-24 13:56:04 +0300
commit541ad0150ca4aa663a2dcb9c834ab493168fe494 (patch)
tree59700888be226a8ce0a67b30b14a057c229a3841 /arch/arm/kvm/coproc.h
parentbb7c62bcb8488e198bdc4ea8e991de0b59770632 (diff)
downloadlinux-541ad0150ca4aa663a2dcb9c834ab493168fe494.tar.xz
arm: Remove 32bit KVM host support
That's it. Remove all references to KVM itself, and document that although it is no more, the ABI between SVC and HYP still exists. Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Diffstat (limited to 'arch/arm/kvm/coproc.h')
-rw-r--r--arch/arm/kvm/coproc.h130
1 files changed, 0 insertions, 130 deletions
diff --git a/arch/arm/kvm/coproc.h b/arch/arm/kvm/coproc.h
deleted file mode 100644
index 637065b13012..000000000000
--- a/arch/arm/kvm/coproc.h
+++ /dev/null
@@ -1,130 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2012 - Virtual Open Systems and Columbia University
- * Authors: Christoffer Dall <c.dall@virtualopensystems.com>
- */
-
-#ifndef __ARM_KVM_COPROC_LOCAL_H__
-#define __ARM_KVM_COPROC_LOCAL_H__
-
-struct coproc_params {
- unsigned long CRn;
- unsigned long CRm;
- unsigned long Op1;
- unsigned long Op2;
- unsigned long Rt1;
- unsigned long Rt2;
- bool is_64bit;
- bool is_write;
-};
-
-struct coproc_reg {
- /* MRC/MCR/MRRC/MCRR instruction which accesses it. */
- unsigned long CRn;
- unsigned long CRm;
- unsigned long Op1;
- unsigned long Op2;
-
- bool is_64bit;
-
- /* Trapped access from guest, if non-NULL. */
- bool (*access)(struct kvm_vcpu *,
- const struct coproc_params *,
- const struct coproc_reg *);
-
- /* Initialization for vcpu. */
- void (*reset)(struct kvm_vcpu *, const struct coproc_reg *);
-
- /* Index into vcpu_cp15(vcpu, ...), or 0 if we don't need to save it. */
- unsigned long reg;
-
- /* Value (usually reset value) */
- u64 val;
-};
-
-static inline void print_cp_instr(const struct coproc_params *p)
-{
- /* Look, we even formatted it for you to paste into the table! */
- if (p->is_64bit) {
- kvm_pr_unimpl(" { CRm64(%2lu), Op1(%2lu), is64, func_%s },\n",
- p->CRn, p->Op1, p->is_write ? "write" : "read");
- } else {
- kvm_pr_unimpl(" { CRn(%2lu), CRm(%2lu), Op1(%2lu), Op2(%2lu), is32,"
- " func_%s },\n",
- p->CRn, p->CRm, p->Op1, p->Op2,
- p->is_write ? "write" : "read");
- }
-}
-
-static inline bool ignore_write(struct kvm_vcpu *vcpu,
- const struct coproc_params *p)
-{
- return true;
-}
-
-static inline bool read_zero(struct kvm_vcpu *vcpu,
- const struct coproc_params *p)
-{
- *vcpu_reg(vcpu, p->Rt1) = 0;
- return true;
-}
-
-/* Reset functions */
-static inline void reset_unknown(struct kvm_vcpu *vcpu,
- const struct coproc_reg *r)
-{
- BUG_ON(!r->reg);
- BUG_ON(r->reg >= ARRAY_SIZE(vcpu->arch.ctxt.cp15));
- vcpu_cp15(vcpu, r->reg) = 0xdecafbad;
-}
-
-static inline void reset_val(struct kvm_vcpu *vcpu, const struct coproc_reg *r)
-{
- BUG_ON(!r->reg);
- BUG_ON(r->reg >= ARRAY_SIZE(vcpu->arch.ctxt.cp15));
- vcpu_cp15(vcpu, r->reg) = r->val;
-}
-
-static inline void reset_unknown64(struct kvm_vcpu *vcpu,
- const struct coproc_reg *r)
-{
- BUG_ON(!r->reg);
- BUG_ON(r->reg + 1 >= ARRAY_SIZE(vcpu->arch.ctxt.cp15));
-
- vcpu_cp15(vcpu, r->reg) = 0xdecafbad;
- vcpu_cp15(vcpu, r->reg+1) = 0xd0c0ffee;
-}
-
-static inline int cmp_reg(const struct coproc_reg *i1,
- const struct coproc_reg *i2)
-{
- BUG_ON(i1 == i2);
- if (!i1)
- return 1;
- else if (!i2)
- return -1;
- if (i1->CRn != i2->CRn)
- return i1->CRn - i2->CRn;
- if (i1->CRm != i2->CRm)
- return i1->CRm - i2->CRm;
- if (i1->Op1 != i2->Op1)
- return i1->Op1 - i2->Op1;
- if (i1->Op2 != i2->Op2)
- return i1->Op2 - i2->Op2;
- return i2->is_64bit - i1->is_64bit;
-}
-
-
-#define CRn(_x) .CRn = _x
-#define CRm(_x) .CRm = _x
-#define CRm64(_x) .CRn = _x, .CRm = 0
-#define Op1(_x) .Op1 = _x
-#define Op2(_x) .Op2 = _x
-#define is64 .is_64bit = true
-#define is32 .is_64bit = false
-
-bool access_vm_reg(struct kvm_vcpu *vcpu,
- const struct coproc_params *p,
- const struct coproc_reg *r);
-
-#endif /* __ARM_KVM_COPROC_LOCAL_H__ */