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From d270372bf8abcf45409b30cdb33069280527b0ff Mon Sep 17 00:00:00 2001
From: Alberto Milone <alberto.milone@canonical.com>
Date: Wed, 15 Feb 2017 18:01:02 +0100
Subject: [PATCH 1/1] Add support for Linux 4.10
---
nv-linux.h | 5 +++++
nv-pat.c | 40 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/kernel/nv-linux.h b/kernel/nv-linux.h
index b46e71f..3081c06 100644
--- a/kernel/nv-linux.h
+++ b/kernel/nv-linux.h
@@ -1895,8 +1895,13 @@ static inline NvU64 nv_node_end_pfn(int nid)
#else
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
return get_user_pages_remote(tsk, mm, start, nr_pages, flags,
pages, vmas);
+#else
+ return get_user_pages_remote(tsk, mm, start, nr_pages, flags,
+ pages, vmas, NULL);
+#endif
#endif
diff --git a/kernel/nv-pat.c b/kernel/nv-pat.c
index e71e81c..d742789 100644
--- a/kernel/nv-pat.c
+++ b/kernel/nv-pat.c
@@ -203,6 +203,7 @@ void nv_disable_pat_support(void)
}
#if defined(NV_ENABLE_PAT_SUPPORT) && defined(NV_ENABLE_HOTPLUG_CPU)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
static int
nv_kern_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
{
@@ -234,6 +235,34 @@ static struct notifier_block nv_hotcpu_nfb = {
.notifier_call = nv_kern_cpu_callback,
.priority = 0
};
+#else
+static int nvidia_cpu_online(unsigned int hcpu)
+{
+ unsigned int cpu = get_cpu();
+ if (cpu == hcpu)
+ nv_setup_pat_entries(NULL);
+ else
+ NV_SMP_CALL_FUNCTION(nv_setup_pat_entries, (void *)(long int)hcpu, 1);
+
+ put_cpu();
+
+ return 0;
+}
+
+static int nvidia_cpu_down_prep(unsigned int hcpu)
+{
+ unsigned int cpu = get_cpu();
+ if (cpu == hcpu)
+ nv_restore_pat_entries(NULL);
+ else
+ NV_SMP_CALL_FUNCTION(nv_restore_pat_entries, (void *)(long int)hcpu, 1);
+
+ put_cpu();
+
+ return 0;
+}
+#endif
+
#endif
int nv_init_pat_support(nv_stack_t *sp)
@@ -255,7 +284,14 @@ int nv_init_pat_support(nv_stack_t *sp)
#if defined(NV_ENABLE_PAT_SUPPORT) && defined(NV_ENABLE_HOTPLUG_CPU)
if (nv_pat_mode == NV_PAT_MODE_BUILTIN)
{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
if (register_hotcpu_notifier(&nv_hotcpu_nfb) != 0)
+#else
+ if (cpuhp_setup_state(CPUHP_AP_ONLINE_DYN,
+ "gpu/nvidia:online",
+ nvidia_cpu_online,
+ nvidia_cpu_down_prep) != 0)
+#endif
{
nv_disable_pat_support();
nv_printf(NV_DBG_ERRORS,
@@ -280,7 +316,11 @@ void nv_teardown_pat_support(void)
{
nv_disable_pat_support();
#if defined(NV_ENABLE_PAT_SUPPORT) && defined(NV_ENABLE_HOTPLUG_CPU)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
unregister_hotcpu_notifier(&nv_hotcpu_nfb);
+#else
+ cpuhp_remove_state_nocalls(CPUHP_AP_ONLINE_DYN);
+#endif
#endif
}
}
--
2.7.4
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