On 4/28/2020 4:50 PM, Dmitry Kozlyuk wrote:
Basic memory management supports core libraries and PMDs operating in
IOVA as PA mode. It uses a kernel-mode driver, virt2phys, to obtain
IOVAs of hugepages allocated from user-mode. Multi-process mode is not
implemented and is forcefully disabled at startup.
Signed-off-by: Dmitry Kozlyuk <dmitry.kozl...@gmail.com>
---
[snip]
+void *
+eal_mem_reserve(void *requested_addr, size_t size, int flags)
+{
+ void *virt;
+
+ /* Windows requires hugepages to be committed. */
+ if (flags & EAL_RESERVE_HUGEPAGES) {
+ rte_errno = ENOTSUP;
+ return NULL;
+ }
+
+ virt = VirtualAlloc2(GetCurrentProcess(), requested_addr, size,
+ MEM_RESERVE | MEM_RESERVE_PLACEHOLDER, PAGE_NOACCESS,
+ NULL, 0);
+ if (virt == NULL) {
+ DWORD err = GetLastError();
+ RTE_LOG_WIN32_ERR("VirtualAlloc2()");
+ set_errno_from_win32_alloc_error(err);
+ }
+
+ if ((flags & EAL_RESERVE_FORCE_ADDRESS) && (virt != requested_addr)) {
+ if (!VirtualFree(virt, 0, MEM_RELEASE))
Shouldn't this be VirtualFreeEx() here?
+ RTE_LOG_WIN32_ERR("VirtualFree()");
+ rte_errno = ENOMEM;
+ return NULL;
+ }
+
+ return virt;
+}
+
ranjit m.
