Drop inline marker: let compiler decide. Change return type to uint64_t: this matches the computation in the return statement and the local variable assignment in the caller.
Rename local to dirty_ring_size_MB to fix typo. Simplify conversion to MiB via qemu_target_page_bits and right shift. Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org> Reviewed-by: Thomas Huth <th...@redhat.com> Reviewed-by: Juan Quintela <quint...@redhat.com> Signed-off-by: Richard Henderson <richard.hender...@linaro.org> --- softmmu/dirtylimit.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/softmmu/dirtylimit.c b/softmmu/dirtylimit.c index 82986c1499..71bf6dc7a4 100644 --- a/softmmu/dirtylimit.c +++ b/softmmu/dirtylimit.c @@ -232,18 +232,23 @@ bool dirtylimit_vcpu_index_valid(int cpu_index) cpu_index >= ms->smp.max_cpus); } -static inline int64_t dirtylimit_dirty_ring_full_time(uint64_t dirtyrate) +static uint64_t dirtylimit_dirty_ring_full_time(uint64_t dirtyrate) { static uint64_t max_dirtyrate; - uint32_t dirty_ring_size = kvm_dirty_ring_size(); - uint64_t dirty_ring_size_meory_MB = - dirty_ring_size * qemu_target_page_size() >> 20; + unsigned target_page_bits = qemu_target_page_bits(); + uint64_t dirty_ring_size_MB; + + /* So far, the largest (non-huge) page size is 64k, i.e. 16 bits. */ + assert(target_page_bits < 20); + + /* Convert ring size (pages) to MiB (2**20). */ + dirty_ring_size_MB = kvm_dirty_ring_size() >> (20 - target_page_bits); if (max_dirtyrate < dirtyrate) { max_dirtyrate = dirtyrate; } - return dirty_ring_size_meory_MB * 1000000 / max_dirtyrate; + return dirty_ring_size_MB * 1000000 / max_dirtyrate; } static inline bool dirtylimit_done(uint64_t quota, -- 2.34.1