diff options
author | Sean Christopherson <seanjc@google.com> | 2021-11-11 03:03:05 +0300 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-11-16 15:43:26 +0300 |
commit | 92e34c9974f55519bc0c3386221aadf387162ea6 (patch) | |
tree | b1e5092fef7eb72a7a5452801b5f2285f4378e72 /tools | |
parent | 613d61182fffca6b36ea0df1e44927ccf45b1e9b (diff) | |
download | linux-92e34c9974f55519bc0c3386221aadf387162ea6.tar.xz |
KVM: selftests: Use perf util's per-vCPU GPA/pages in demand paging test
Grab the per-vCPU GPA and number of pages from perf_util in the demand
paging test instead of duplicating perf_util's calculations.
Note, this may or may not result in a functional change. It's not clear
that the test's calculations are guaranteed to yield the same value as
perf_util, e.g. if guest_percpu_mem_size != vcpu_args->pages.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20211111000310.1435032-8-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/testing/selftests/kvm/demand_paging_test.c | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/tools/testing/selftests/kvm/demand_paging_test.c b/tools/testing/selftests/kvm/demand_paging_test.c index 1510b21e6306..3c729a0a1ab1 100644 --- a/tools/testing/selftests/kvm/demand_paging_test.c +++ b/tools/testing/selftests/kvm/demand_paging_test.c @@ -322,26 +322,15 @@ static void run_test(enum vm_guest_mode mode, void *arg) TEST_ASSERT(pipefds, "Unable to allocate memory for pipefd"); for (vcpu_id = 0; vcpu_id < nr_vcpus; vcpu_id++) { - vm_paddr_t vcpu_gpa; + struct perf_test_vcpu_args *vcpu_args; void *vcpu_hva; void *vcpu_alias; - uint64_t vcpu_mem_size; - - if (p->partition_vcpu_memory_access) { - vcpu_gpa = guest_test_phys_mem + - (vcpu_id * guest_percpu_mem_size); - vcpu_mem_size = guest_percpu_mem_size; - } else { - vcpu_gpa = guest_test_phys_mem; - vcpu_mem_size = guest_percpu_mem_size * nr_vcpus; - } - PER_VCPU_DEBUG("Added VCPU %d with test mem gpa [%lx, %lx)\n", - vcpu_id, vcpu_gpa, vcpu_gpa + vcpu_mem_size); + vcpu_args = &perf_test_args.vcpu_args[vcpu_id]; /* Cache the host addresses of the region */ - vcpu_hva = addr_gpa2hva(vm, vcpu_gpa); - vcpu_alias = addr_gpa2alias(vm, vcpu_gpa); + vcpu_hva = addr_gpa2hva(vm, vcpu_args->gpa); + vcpu_alias = addr_gpa2alias(vm, vcpu_args->gpa); /* * Set up user fault fd to handle demand paging @@ -355,7 +344,7 @@ static void run_test(enum vm_guest_mode mode, void *arg) pipefds[vcpu_id * 2], p->uffd_mode, p->uffd_delay, &uffd_args[vcpu_id], vcpu_hva, vcpu_alias, - vcpu_mem_size); + vcpu_args->pages * perf_test_args.guest_page_size); } } |