linux-kernel - [PATCH v2 05/11] KVM: selftests: Improve error message in vm_phy_pages

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Date:   Mon, 21 Mar 2022 16:48:38 -0700
From:   Ben Gardon <bgardon@...gle.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>, Peter Xu <peterx@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Jim Mattson <jmattson@...gle.com>,
        David Dunn <daviddunn@...gle.com>,
        Jing Zhang <jingzhangos@...gle.com>,
        Junaid Shahid <junaids@...gle.com>,
        Ben Gardon <bgardon@...gle.com>
Subject: [PATCH v2 05/11] KVM: selftests: Improve error message in vm_phy_pages_alloc

Make an error message in vm_phy_pages_alloc more specific, and log the
number of pages requested in the allocation.

Signed-off-by: Ben Gardon <bgardon@...gle.com>
---
 tools/testing/selftests/kvm/lib/kvm_util.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 09742a787546..9d72d1bb34fa 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -2408,9 +2408,10 @@ vm_paddr_t vm_phy_pages_alloc(struct kvm_vm *vm, size_t num,
 	} while (pg && pg != base + num);
 
 	if (pg == 0) {
-		fprintf(stderr, "No guest physical page available, "
+		fprintf(stderr,
+			"Unable to find %ld contiguous guest physical pages. "
 			"paddr_min: 0x%lx page_size: 0x%x memslot: %u\n",
-			paddr_min, vm->page_size, memslot);
+			num, paddr_min, vm->page_size, memslot);
 		fputs("---- vm dump ----\n", stderr);
 		vm_dump(stderr, vm, 2);
 		abort();
-- 
2.35.1.894.gb6a874cedc-goog