Merge branch 'odp_fixes' into hmm.git

From rdma.git

Jason Gunthorpe says:

====================
This is a collection of general cleanups for ODP to clarify some of the
flows around umem creation and use of the interval tree.
====================

The branch is based on v5.3-rc5 due to dependencies, and is being taken
into hmm.git due to dependencies in the next patches.

* odp_fixes:
  RDMA/mlx5: Use odp instead of mr->umem in pagefault_mr
  RDMA/mlx5: Use ib_umem_start instead of umem.address
  RDMA/core: Make invalidate_range a device operation
  RDMA/odp: Use kvcalloc for the dma_list and page_list
  RDMA/odp: Check for overflow when computing the umem_odp end
  RDMA/odp: Provide ib_umem_odp_release() to undo the allocs
  RDMA/odp: Split creating a umem_odp from ib_umem_get
  RDMA/odp: Make the three ways to create a umem_odp clear
  RMDA/odp: Consolidate umem_odp initialization
  RDMA/odp: Make it clearer when a umem is an implicit ODP umem
  RDMA/odp: Iterate over the whole rbtree directly
  RDMA/odp: Use the common interval tree library instead of generic
  RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLB

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

1 files changed, 15 insertions, 8 deletions

diff --git a/arch/arm/kvm/coproc.c b/arch/arm/kvm/coproc.c
index d2806bcff8bb..07745ee022a1 100644
--- a/arch/arm/kvm/coproc.c
+++ b/arch/arm/kvm/coproc.c
@@ -651,13 +651,22 @@ int kvm_handle_cp14_64(struct kvm_vcpu *vcpu, struct kvm_run *run)
 }
 
 static void reset_coproc_regs(struct kvm_vcpu *vcpu,
-			      const struct coproc_reg *table, size_t num)
+			      const struct coproc_reg *table, size_t num,
+			      unsigned long *bmap)
 {
 	unsigned long i;
 
 	for (i = 0; i < num; i++)
-		if (table[i].reset)
+		if (table[i].reset) {
+			int reg = table[i].reg;
+
 			table[i].reset(vcpu, &table[i]);
+			if (reg > 0 && reg < NR_CP15_REGS) {
+				set_bit(reg, bmap);
+				if (table[i].is_64bit)
+					set_bit(reg + 1, bmap);
+			}
+		}
 }
 
 static struct coproc_params decode_32bit_hsr(struct kvm_vcpu *vcpu)
@@ -1432,17 +1441,15 @@ void kvm_reset_coprocs(struct kvm_vcpu *vcpu)
 {
 	size_t num;
 	const struct coproc_reg *table;
-
-	/* Catch someone adding a register without putting in reset entry. */
-	memset(vcpu->arch.ctxt.cp15, 0x42, sizeof(vcpu->arch.ctxt.cp15));
+	DECLARE_BITMAP(bmap, NR_CP15_REGS) = { 0, };
 
 	/* Generic chip reset first (so target could override). */
-	reset_coproc_regs(vcpu, cp15_regs, ARRAY_SIZE(cp15_regs));
+	reset_coproc_regs(vcpu, cp15_regs, ARRAY_SIZE(cp15_regs), bmap);
 
 	table = get_target_table(vcpu->arch.target, &num);
-	reset_coproc_regs(vcpu, table, num);
+	reset_coproc_regs(vcpu, table, num, bmap);
 
 	for (num = 1; num < NR_CP15_REGS; num++)
-		WARN(vcpu_cp15(vcpu, num) == 0x42424242,
+		WARN(!test_bit(num, bmap),
 		     "Didn't reset vcpu_cp15(vcpu, %zi)", num);
 }