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KVM: x86: Shrink struct kvm_pmu

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Move the 'version' member to the beginning of the structure to reuse an
existing hole instead of introducing another one.

This allows us to save 8 bytes for 64 bit builds.

Signed-off-by: Mathias Krause <minipli@grsecurity.net>
Link: https://lore.kernel.org/r/20230217193336.15278-2-minipli@grsecurity.net
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Mathias Krause 2023-02-17 20:33:35 +01:00 committed by Sean Christopherson
parent d8708b80fa
commit 12aad91647
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/kvm_host.h
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@ -515,6 +515,7 @@ struct kvm_pmc {
#define MSR_ARCH_PERFMON_FIXED_CTR_MAX (MSR_ARCH_PERFMON_FIXED_CTR0 + KVM_PMC_MAX_FIXED - 1)
#define KVM_AMD_PMC_MAX_GENERIC 6
struct kvm_pmu {
u8 version;
unsigned nr_arch_gp_counters;
unsigned nr_arch_fixed_counters;
unsigned available_event_types;
@ -527,7 +528,6 @@ struct kvm_pmu {
u64 global_ovf_ctrl_mask;
u64 reserved_bits;
u64 raw_event_mask;
u8 version;
struct kvm_pmc gp_counters[KVM_INTEL_PMC_MAX_GENERIC];
struct kvm_pmc fixed_counters[KVM_PMC_MAX_FIXED];
struct irq_work irq_work;