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[RFC,v2,03/23] KVM: arm64: Refactor kvm_arm_num_regs() for easier maintenance

Message ID 1538141967-15375-4-git-send-email-Dave.Martin@arm.com (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: Initial support for SVE guests | expand

Commit Message

Dave Martin Sept. 28, 2018, 1:39 p.m. UTC 
kvm_arm_num_regs() adds together various partial register counts in
a freeform sum expression, which makes it harder than necessary to
read diffs that add, modify or remove a single term in the sum
(which is expected to the common case under maintenance).

This patch refactors the code to add the term one per line, for
maximum readability.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
---
 arch/arm64/kvm/guest.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
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Patch

diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 07256b0..953a5c9 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -205,8 +205,14 @@  static int get_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
  */
 unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu)
 {
-	return num_core_regs() + kvm_arm_num_sys_reg_descs(vcpu)
-		+ kvm_arm_get_fw_num_regs(vcpu)	+ NUM_TIMER_REGS;
+	unsigned long res = 0;
+
+	res += num_core_regs();
+	res += kvm_arm_num_sys_reg_descs(vcpu);
+	res += kvm_arm_get_fw_num_regs(vcpu);
+	res += NUM_TIMER_REGS;
+
+	return res;
 }
 
 /**