From: Marc Zyngier <maz@kernel.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Andrew Jones <drjones@redhat.com>, Gavin Shan <gshan@redhat.com>,
kvm@vger.kernel.org, kernel-team@android.com,
Steven Price <steven.price@arm.com>,
Eric Auger <eric.auger@redhat.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/9] KVM: arm64: Drop type input from kvm_put_guest
Date: Fri, 4 Sep 2020 11:45:24 +0100 [thread overview]
Message-ID: <20200904104530.1082676-4-maz@kernel.org> (raw)
In-Reply-To: <20200904104530.1082676-1-maz@kernel.org>
From: Andrew Jones <drjones@redhat.com>
We can use typeof() to avoid the need for the type input.
Suggested-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200804170604.42662-4-drjones@redhat.com
---
arch/arm64/kvm/pvtime.c | 2 +-
include/linux/kvm_host.h | 11 ++++++-----
2 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/kvm/pvtime.c b/arch/arm64/kvm/pvtime.c
index 95f9580275b1..241ded7ee0ad 100644
--- a/arch/arm64/kvm/pvtime.c
+++ b/arch/arm64/kvm/pvtime.c
@@ -32,7 +32,7 @@ void kvm_update_stolen_time(struct kvm_vcpu *vcpu)
steal_le = cpu_to_le64(steal);
idx = srcu_read_lock(&kvm->srcu);
offset = offsetof(struct pvclock_vcpu_stolen_time, stolen_time);
- kvm_put_guest(kvm, base + offset, steal_le, u64);
+ kvm_put_guest(kvm, base + offset, steal_le);
srcu_read_unlock(&kvm->srcu, idx);
}
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index a23076765b4c..84371fb06209 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -749,25 +749,26 @@ int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
gpa_t gpa, unsigned long len);
-#define __kvm_put_guest(kvm, gfn, offset, value, type) \
+#define __kvm_put_guest(kvm, gfn, offset, v) \
({ \
unsigned long __addr = gfn_to_hva(kvm, gfn); \
- type __user *__uaddr = (type __user *)(__addr + offset); \
+ typeof(v) __user *__uaddr = (typeof(__uaddr))(__addr + offset); \
int __ret = -EFAULT; \
\
if (!kvm_is_error_hva(__addr)) \
- __ret = put_user(value, __uaddr); \
+ __ret = put_user(v, __uaddr); \
if (!__ret) \
mark_page_dirty(kvm, gfn); \
__ret; \
})
-#define kvm_put_guest(kvm, gpa, value, type) \
+#define kvm_put_guest(kvm, gpa, v) \
({ \
gpa_t __gpa = gpa; \
struct kvm *__kvm = kvm; \
+ \
__kvm_put_guest(__kvm, __gpa >> PAGE_SHIFT, \
- offset_in_page(__gpa), (value), type); \
+ offset_in_page(__gpa), v); \
})
int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
--
2.27.0
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next prev parent reply other threads:[~2020-09-04 10:48 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-04 10:45 [GIT PULL] KVM/arm64 fixes for 5.9 Marc Zyngier
2020-09-04 10:45 ` [PATCH 1/9] KVM: arm64: pvtime: steal-time is only supported when configured Marc Zyngier
2020-09-04 10:45 ` [PATCH 2/9] KVM: arm64: pvtime: Fix potential loss of stolen time Marc Zyngier
2020-09-04 10:45 ` Marc Zyngier [this message]
2020-09-04 10:45 ` [PATCH 4/9] KVM: arm64: pvtime: Fix stolen time accounting across migration Marc Zyngier
2020-09-04 10:45 ` [PATCH 5/9] KVM: Documentation: Minor fixups Marc Zyngier
2020-09-04 10:45 ` [PATCH 6/9] arm64/x86: KVM: Introduce steal-time cap Marc Zyngier
2020-09-04 10:45 ` [PATCH 7/9] KVM: arm64: Do not try to map PUDs when they are folded into PMD Marc Zyngier
2020-09-09 3:23 ` Punit Agrawal
2020-09-04 10:45 ` [PATCH 8/9] KVM: arm64: Fix address truncation in traces Marc Zyngier
2020-09-04 10:45 ` [PATCH 9/9] KVM: arm64: Update page shift if stage 2 block mapping not supported Marc Zyngier
2020-09-09 15:20 ` [GIT PULL] KVM/arm64 fixes for 5.9 Paolo Bonzini
2020-09-09 17:15 ` Marc Zyngier
2020-09-09 17:20 ` Paolo Bonzini
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