Re: [PATCH 1/3] Drivers: hv: Make portions of Hyper-V init code be arch neutral
From: Wei Liu <wei.liu@kernel.org>
Date: 2021-07-12 18:24:07
Also in:
linux-arch, lkml
On Sun, Jul 11, 2021 at 08:25:14PM -0700, Michael Kelley wrote: [...]
+int hv_common_cpu_init(unsigned int cpu)
+{
+ void **inputarg, **outputarg;
+ u64 msr_vp_index;
+ gfp_t flags;
+ int pgcount = hv_root_partition ? 2 : 1;
+
+ /* hv_cpu_init() can be called with IRQs disabled from hv_resume() */
+ flags = irqs_disabled() ? GFP_ATOMIC : GFP_KERNEL;
+
+ inputarg = (void **)this_cpu_ptr(hyperv_pcpu_input_arg);
+ *inputarg = kmalloc(pgcount * HV_HYP_PAGE_SIZE, flags);This is changed from alloc_pages to kmalloc. Does it ensure the alignment is still correct? Wei.