From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Schspa Shi <schspa@gmail.com>,
kernel-team@android.com
Subject: [PATCH 02/19] KVM: arm64: Reorder handling of invariant sysregs from userspace
Date: Wed, 6 Jul 2022 17:42:47 +0100 [thread overview]
Message-ID: <20220706164304.1582687-3-maz@kernel.org> (raw)
In-Reply-To: <20220706164304.1582687-1-maz@kernel.org>
In order to allow some further refactor of the sysreg helpers,
move the handling of invariant sysreg to occur before we handle
all the other ones.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/kvm/sys_regs.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 1f410283c592..9291cb94c2e4 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2849,6 +2849,7 @@ int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
{
const struct sys_reg_desc *r;
void __user *uaddr = (void __user *)(unsigned long)reg->addr;
+ int err;
if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_DEMUX)
return demux_c15_get(reg->id, uaddr);
@@ -2856,12 +2857,14 @@ int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
if (KVM_REG_SIZE(reg->id) != sizeof(__u64))
return -ENOENT;
+ err = get_invariant_sys_reg(reg->id, uaddr);
+ if (err != -ENOENT)
+ return err;
+
r = index_to_sys_reg_desc(vcpu, reg->id);
- if (!r)
- return get_invariant_sys_reg(reg->id, uaddr);
/* Check for regs disabled by runtime config */
- if (sysreg_hidden(vcpu, r))
+ if (!r || sysreg_hidden(vcpu, r))
return -ENOENT;
if (r->get_user)
@@ -2874,6 +2877,7 @@ int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
{
const struct sys_reg_desc *r;
void __user *uaddr = (void __user *)(unsigned long)reg->addr;
+ int err;
if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_DEMUX)
return demux_c15_set(reg->id, uaddr);
@@ -2881,12 +2885,14 @@ int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
if (KVM_REG_SIZE(reg->id) != sizeof(__u64))
return -ENOENT;
+ err = set_invariant_sys_reg(reg->id, uaddr);
+ if (err != -ENOENT)
+ return err;
+
r = index_to_sys_reg_desc(vcpu, reg->id);
- if (!r)
- return set_invariant_sys_reg(reg->id, uaddr);
/* Check for regs disabled by runtime config */
- if (sysreg_hidden(vcpu, r))
+ if (!r || sysreg_hidden(vcpu, r))
return -ENOENT;
if (r->set_user)
--
2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: Schspa Shi <schspa@gmail.com>,
kernel-team@android.com, Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH 02/19] KVM: arm64: Reorder handling of invariant sysregs from userspace
Date: Wed, 6 Jul 2022 17:42:47 +0100 [thread overview]
Message-ID: <20220706164304.1582687-3-maz@kernel.org> (raw)
In-Reply-To: <20220706164304.1582687-1-maz@kernel.org>
In order to allow some further refactor of the sysreg helpers,
move the handling of invariant sysreg to occur before we handle
all the other ones.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/kvm/sys_regs.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 1f410283c592..9291cb94c2e4 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2849,6 +2849,7 @@ int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
{
const struct sys_reg_desc *r;
void __user *uaddr = (void __user *)(unsigned long)reg->addr;
+ int err;
if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_DEMUX)
return demux_c15_get(reg->id, uaddr);
@@ -2856,12 +2857,14 @@ int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
if (KVM_REG_SIZE(reg->id) != sizeof(__u64))
return -ENOENT;
+ err = get_invariant_sys_reg(reg->id, uaddr);
+ if (err != -ENOENT)
+ return err;
+
r = index_to_sys_reg_desc(vcpu, reg->id);
- if (!r)
- return get_invariant_sys_reg(reg->id, uaddr);
/* Check for regs disabled by runtime config */
- if (sysreg_hidden(vcpu, r))
+ if (!r || sysreg_hidden(vcpu, r))
return -ENOENT;
if (r->get_user)
@@ -2874,6 +2877,7 @@ int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
{
const struct sys_reg_desc *r;
void __user *uaddr = (void __user *)(unsigned long)reg->addr;
+ int err;
if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_DEMUX)
return demux_c15_set(reg->id, uaddr);
@@ -2881,12 +2885,14 @@ int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
if (KVM_REG_SIZE(reg->id) != sizeof(__u64))
return -ENOENT;
+ err = set_invariant_sys_reg(reg->id, uaddr);
+ if (err != -ENOENT)
+ return err;
+
r = index_to_sys_reg_desc(vcpu, reg->id);
- if (!r)
- return set_invariant_sys_reg(reg->id, uaddr);
/* Check for regs disabled by runtime config */
- if (sysreg_hidden(vcpu, r))
+ if (!r || sysreg_hidden(vcpu, r))
return -ENOENT;
if (r->set_user)
--
2.34.1
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Schspa Shi <schspa@gmail.com>,
kernel-team@android.com
Subject: [PATCH 02/19] KVM: arm64: Reorder handling of invariant sysregs from userspace
Date: Wed, 6 Jul 2022 17:42:47 +0100 [thread overview]
Message-ID: <20220706164304.1582687-3-maz@kernel.org> (raw)
In-Reply-To: <20220706164304.1582687-1-maz@kernel.org>
In order to allow some further refactor of the sysreg helpers,
move the handling of invariant sysreg to occur before we handle
all the other ones.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/kvm/sys_regs.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 1f410283c592..9291cb94c2e4 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2849,6 +2849,7 @@ int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
{
const struct sys_reg_desc *r;
void __user *uaddr = (void __user *)(unsigned long)reg->addr;
+ int err;
if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_DEMUX)
return demux_c15_get(reg->id, uaddr);
@@ -2856,12 +2857,14 @@ int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
if (KVM_REG_SIZE(reg->id) != sizeof(__u64))
return -ENOENT;
+ err = get_invariant_sys_reg(reg->id, uaddr);
+ if (err != -ENOENT)
+ return err;
+
r = index_to_sys_reg_desc(vcpu, reg->id);
- if (!r)
- return get_invariant_sys_reg(reg->id, uaddr);
/* Check for regs disabled by runtime config */
- if (sysreg_hidden(vcpu, r))
+ if (!r || sysreg_hidden(vcpu, r))
return -ENOENT;
if (r->get_user)
@@ -2874,6 +2877,7 @@ int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
{
const struct sys_reg_desc *r;
void __user *uaddr = (void __user *)(unsigned long)reg->addr;
+ int err;
if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_DEMUX)
return demux_c15_set(reg->id, uaddr);
@@ -2881,12 +2885,14 @@ int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg
if (KVM_REG_SIZE(reg->id) != sizeof(__u64))
return -ENOENT;
+ err = set_invariant_sys_reg(reg->id, uaddr);
+ if (err != -ENOENT)
+ return err;
+
r = index_to_sys_reg_desc(vcpu, reg->id);
- if (!r)
- return set_invariant_sys_reg(reg->id, uaddr);
/* Check for regs disabled by runtime config */
- if (sysreg_hidden(vcpu, r))
+ if (!r || sysreg_hidden(vcpu, r))
return -ENOENT;
if (r->set_user)
--
2.34.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-07-06 16:43 UTC|newest]
Thread overview: 141+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-06 16:42 [PATCH 00/19] KVM: arm64: vgic-v3 userspace access consolidation (and other goodies) Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` [PATCH 01/19] KVM: arm64: Add get_reg_by_id() as a sys_reg_desc retrieving helper Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-07 4:05 ` Reiji Watanabe
2022-07-07 4:05 ` Reiji Watanabe
2022-07-07 4:05 ` Reiji Watanabe
2022-07-07 5:16 ` Reiji Watanabe
2022-07-07 5:16 ` Reiji Watanabe
2022-07-07 5:16 ` Reiji Watanabe
2022-07-06 16:42 ` Marc Zyngier [this message]
2022-07-06 16:42 ` [PATCH 02/19] KVM: arm64: Reorder handling of invariant sysregs from userspace Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-07 4:24 ` Reiji Watanabe
2022-07-07 4:24 ` Reiji Watanabe
2022-07-07 4:24 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 03/19] KVM: arm64: Introduce generic get_user/set_user helpers for system registers Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-08 19:20 ` Oliver Upton
2022-07-08 19:20 ` Oliver Upton
2022-07-08 19:20 ` Oliver Upton
2022-07-09 6:59 ` Reiji Watanabe
2022-07-09 6:59 ` Reiji Watanabe
2022-07-09 6:59 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 04/19] KVM: arm64: Push checks for 64bit registers into the low-level accessors Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-08 6:13 ` Reiji Watanabe
2022-07-08 6:13 ` Reiji Watanabe
2022-07-08 6:13 ` Reiji Watanabe
2022-07-08 8:05 ` Marc Zyngier
2022-07-08 8:05 ` Marc Zyngier
2022-07-08 8:05 ` Marc Zyngier
2022-07-06 16:42 ` [PATCH 05/19] KVM: arm64: Consolidate sysreg userspace accesses Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-08 19:33 ` Oliver Upton
2022-07-08 19:33 ` Oliver Upton
2022-07-08 19:33 ` Oliver Upton
2022-07-09 6:55 ` Reiji Watanabe
2022-07-09 6:55 ` Reiji Watanabe
2022-07-09 6:55 ` Reiji Watanabe
2022-07-12 7:25 ` Marc Zyngier
2022-07-12 7:25 ` Marc Zyngier
2022-07-12 7:25 ` Marc Zyngier
2022-07-06 16:42 ` [PATCH 06/19] KVM: arm64: Get rid of reg_from/to_user() Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-08 19:35 ` Oliver Upton
2022-07-08 19:35 ` Oliver Upton
2022-07-08 19:35 ` Oliver Upton
2022-07-12 4:34 ` Reiji Watanabe
2022-07-12 4:34 ` Reiji Watanabe
2022-07-12 4:34 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 07/19] KVM: arm64: vgic-v3: Simplify vgic_v3_has_cpu_sysregs_attr() Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-08 19:38 ` Oliver Upton
2022-07-08 19:38 ` Oliver Upton
2022-07-08 19:38 ` Oliver Upton
2022-07-12 5:22 ` Reiji Watanabe
2022-07-12 5:22 ` Reiji Watanabe
2022-07-12 5:22 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 08/19] KVM: arm64: vgic-v3: Push user access into vgic_v3_cpu_sysregs_uaccess() Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-12 6:11 ` Reiji Watanabe
2022-07-12 6:11 ` Reiji Watanabe
2022-07-12 6:11 ` Reiji Watanabe
2022-07-12 6:52 ` Marc Zyngier
2022-07-12 6:52 ` Marc Zyngier
2022-07-12 6:52 ` Marc Zyngier
2022-07-13 3:26 ` Reiji Watanabe
2022-07-13 3:26 ` Reiji Watanabe
2022-07-13 3:26 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 09/19] KVM: arm64: vgic-v3: Make the userspace accessors use sysreg API Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-13 5:21 ` Reiji Watanabe
2022-07-13 5:21 ` Reiji Watanabe
2022-07-13 5:21 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 10/19] KVM: arm64: vgic-v3: Convert userspace accessors over to FIELD_GET/FIELD_PREP Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-13 5:51 ` Reiji Watanabe
2022-07-13 5:51 ` Reiji Watanabe
2022-07-13 5:51 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 11/19] KVM: arm64: vgic-v3: Use u32 to manage the line level from userspace Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-13 6:45 ` Reiji Watanabe
2022-07-13 6:45 ` Reiji Watanabe
2022-07-13 6:45 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 12/19] KVM: arm64: vgic-v3: Consolidate userspace access for MMIO registers Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-14 4:11 ` Reiji Watanabe
2022-07-14 4:11 ` Reiji Watanabe
2022-07-14 4:11 ` Reiji Watanabe
2022-07-06 16:42 ` [PATCH 13/19] KVM: arm64: vgic-v2: " Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-14 4:43 ` Reiji Watanabe
2022-07-14 4:43 ` Reiji Watanabe
2022-07-14 4:43 ` Reiji Watanabe
2022-07-14 7:09 ` Marc Zyngier
2022-07-14 7:09 ` Marc Zyngier
2022-07-14 7:09 ` Marc Zyngier
2022-07-06 16:42 ` [PATCH 14/19] KVM: arm64: vgic: Use {get,put}_user() instead of copy_{from.to}_user Marc Zyngier
2022-07-06 16:42 ` Marc Zyngier
2022-07-06 16:42 ` [PATCH 14/19] KVM: arm64: vgic: Use {get, put}_user() " Marc Zyngier
2022-07-14 5:09 ` Reiji Watanabe
2022-07-14 5:09 ` Reiji Watanabe
2022-07-14 5:09 ` Reiji Watanabe
2022-07-06 16:43 ` [PATCH 15/19] KVM: arm64: vgic-v2: Add helper for legacy dist/cpuif base address setting Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-14 6:37 ` Reiji Watanabe
2022-07-14 6:37 ` Reiji Watanabe
2022-07-14 6:37 ` Reiji Watanabe
2022-07-14 7:01 ` Marc Zyngier
2022-07-14 7:01 ` Marc Zyngier
2022-07-14 7:01 ` Marc Zyngier
2022-07-15 6:44 ` Reiji Watanabe
2022-07-15 6:44 ` Reiji Watanabe
2022-07-15 6:44 ` Reiji Watanabe
2022-07-06 16:43 ` [PATCH 16/19] KVM: arm64: vgic: Consolidate userspace access for " Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-06 16:43 ` [PATCH 17/19] KVM: arm64: Get rid of find_reg_by_id() Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-06 16:43 ` [PATCH 18/19] KVM: arm64: Descope kvm_arm_sys_reg_{get,set}_reg() Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-06 16:43 ` [PATCH 19/19] KVM: arm64: Get rid or outdated comments Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
2022-07-06 16:43 ` Marc Zyngier
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