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KVM: arm64: vgic-its: Fix misleading nr_entries in vgic_its_check_device_id
The nr_entries variable in vgic_its_check_device_id actually describe the size of the L1 table, and not the number of entries in this table. Rename it to l1_tbl_size, so that we can now change the code with a better understanding of what is what. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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1 changed files with 3 additions and 3 deletions
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@ -687,18 +687,18 @@ static bool vgic_its_check_device_id(struct kvm *kvm, struct vgic_its *its,
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int device_id)
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{
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u64 r = its->baser_device_table;
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int nr_entries = GITS_BASER_NR_PAGES(r) * SZ_64K;
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int l1_tbl_size = GITS_BASER_NR_PAGES(r) * SZ_64K;
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int index;
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u64 indirect_ptr;
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gfn_t gfn;
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if (!(r & GITS_BASER_INDIRECT))
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return device_id < (nr_entries / GITS_BASER_ENTRY_SIZE(r));
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return device_id < (l1_tbl_size / GITS_BASER_ENTRY_SIZE(r));
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/* calculate and check the index into the 1st level */
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index = device_id / (SZ_64K / GITS_BASER_ENTRY_SIZE(r));
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if (index >= (nr_entries / sizeof(u64)))
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if (index >= (l1_tbl_size / sizeof(u64)))
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return false;
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/* Each 1st level entry is represented by a 64-bit value. */
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