[PATCH v2 2/2] KVM: Shrink struct kvm_mmu_memory_cache

From: Mathias Krause
Date: Fri Feb 17 2023 - 14:31:38 EST


Move the 'capacity' member around to make use of the padding hole on 64
bit systems instead of introducing yet another one.

This allows us to save 8 bytes per instance for 64 bit builds of which,
e.g., x86's struct kvm_vcpu_arch has a few.

Signed-off-by: Mathias Krause <minipli@xxxxxxxxxxxxxx>
---
v2: use order as suggested by Sean

include/linux/kvm_types.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h
index 76de36e56cdf..0b2ddce47f11 100644
--- a/include/linux/kvm_types.h
+++ b/include/linux/kvm_types.h
@@ -91,11 +91,11 @@ struct gfn_to_pfn_cache {
* is topped up (__kvm_mmu_topup_memory_cache()).
*/
struct kvm_mmu_memory_cache {
- int nobjs;
gfp_t gfp_zero;
gfp_t gfp_custom;
struct kmem_cache *kmem_cache;
int capacity;
+ int nobjs;
void **objects;
};
#endif
--
2.39.1