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| author | Quentin Perret <qperret@google.com> | 2021-12-08 15:22:54 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-12-15 14:16:28 +0000 |
| commit | 34b43a8849229e8363c19236ecdf463b7a89d085 (patch) | |
| tree | b2354d8ac484680e2e30389fe00480c365c2c456 /arch/arm64/kvm | |
| parent | d58071a8a76d779eedab38033ae4c821c30295a5 (diff) | |
| download | linux-34b43a8849229e8363c19236ecdf463b7a89d085.tar.gz linux-34b43a8849229e8363c19236ecdf463b7a89d085.tar.bz2 linux-34b43a8849229e8363c19236ecdf463b7a89d085.zip | |
KVM: arm64: pkvm: Fix hyp_pool max order
The EL2 page allocator in protected mode maintains a per-pool max order
value to optimize allocations when the memory region it covers is small.
However, the max order value is currently under-estimated whenever the
number of pages in the region is a power of two. Fix the estimation.
Signed-off-by: Quentin Perret <qperret@google.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211208152300.2478542-2-qperret@google.com
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/page_alloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kvm/hyp/nvhe/page_alloc.c b/arch/arm64/kvm/hyp/nvhe/page_alloc.c index 0bd7701ad1df..543cad6c376a 100644 --- a/arch/arm64/kvm/hyp/nvhe/page_alloc.c +++ b/arch/arm64/kvm/hyp/nvhe/page_alloc.c @@ -241,7 +241,7 @@ int hyp_pool_init(struct hyp_pool *pool, u64 pfn, unsigned int nr_pages, int i; hyp_spin_lock_init(&pool->lock); - pool->max_order = min(MAX_ORDER, get_order(nr_pages << PAGE_SHIFT)); + pool->max_order = min(MAX_ORDER, get_order((nr_pages + 1) << PAGE_SHIFT)); for (i = 0; i < pool->max_order; i++) INIT_LIST_HEAD(&pool->free_area[i]); pool->range_start = phys; |