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authorLinus Torvalds <torvalds@linux-foundation.org>2019-09-17 05:39:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-17 05:39:00 +0300
commite2bddc20b562ee23046ad541cf29314e4aebd934 (patch)
tree608da9a4721ec3b9b19f342f580793de6babef4e /arch/x86/hyperv
parent6f24671485d0d0eaeaccd910fa8148db72aac089 (diff)
parent83527ef7abf7c02c33a90b00f0954db35415adbd (diff)
downloadlinux-e2bddc20b562ee23046ad541cf29314e4aebd934.tar.xz
Merge branch 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 hyperv updates from Ingo Molnar: "Misc updates related to page size abstractions within the HyperV code, in preparation for future features" * 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: drivers: hv: vmbus: Replace page definition with Hyper-V specific one x86/hyperv: Add functions to allocate/deallocate page for Hyper-V x86/hyperv: Create and use Hyper-V page definitions
Diffstat (limited to 'arch/x86/hyperv')
-rw-r--r--arch/x86/hyperv/hv_init.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index 0d258688c8cf..d314cf1e15fd 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -37,6 +37,20 @@ EXPORT_SYMBOL_GPL(hyperv_pcpu_input_arg);
u32 hv_max_vp_index;
EXPORT_SYMBOL_GPL(hv_max_vp_index);
+void *hv_alloc_hyperv_page(void)
+{
+ BUILD_BUG_ON(PAGE_SIZE != HV_HYP_PAGE_SIZE);
+
+ return (void *)__get_free_page(GFP_KERNEL);
+}
+EXPORT_SYMBOL_GPL(hv_alloc_hyperv_page);
+
+void hv_free_hyperv_page(unsigned long addr)
+{
+ free_page(addr);
+}
+EXPORT_SYMBOL_GPL(hv_free_hyperv_page);
+
static int hv_cpu_init(unsigned int cpu)
{
u64 msr_vp_index;