Compatibility with Linux 5.1.0-rc2

1 files changed, 105 insertions, 0 deletions

diff --git a/vmmon.patch b/vmmon.patch
index 3b7fddf79a45..a801be3b146f 100644
--- a/vmmon.patch
+++ b/vmmon.patch
@@ -1502,3 +1502,108 @@ index 75f4c8a..987932b 100644
        printk(KERN_ERR "%s: Couldn't verify write to uva 0x%p with size %"
               FMTSZ"u\n", __func__, p, size);
  
+From 41413a9b6e660a93600a438944d85b6f51eb680c Mon Sep 17 00:00:00 2001
+From: Michal Kubecek <mkubecek@suse.cz>
+Date: Tue, 5 Mar 2019 13:21:35 +0100
+Subject: [PATCH] vmmon: use KERNEL_DS rather than get_ds()
+
+Commit 736706bee329 ("get rid of legacy 'get_ds()' function") in v5.1-rc1
+removed get_ds() helper. As this helper always returned KERNEL_DS on x86_64
+since the architecture was introduced (and even on i386, it did so since
+v2.1.0), simply use KERNEL_DS regardless of kernel version.
+---
+ vmmon-only/linux/hostif.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/vmmon-only/linux/hostif.c b/vmmon-only/linux/hostif.c
+index ef88a22..8ca17de 100644
+--- a/vmmon-only/linux/hostif.c
++++ b/vmmon-only/linux/hostif.c
+@@ -2311,7 +2311,7 @@ isVAReadable(VA r)  // IN:
+    int ret;
+    
+    old_fs = get_fs();
+-   set_fs(get_ds());
++   set_fs(KERNEL_DS);
+    r = APICR_TO_ADDR(r, APICR_VERSION);
+    ret = HostIF_CopyFromUser(&dummy, (void*)r, sizeof(dummy));
+    set_fs(old_fs);
+@@ -2512,7 +2512,7 @@ HostIF_SemaphoreWait(VMDriver *vm,   // IN:
+    }
+ 
+    old_fs = get_fs();
+-   set_fs(get_ds());
++   set_fs(KERNEL_DS);
+ 
+    {
+       struct poll_wqueues table;
+@@ -2641,7 +2641,7 @@ HostIF_SemaphoreSignal(uint64 *args)  // IN:
+    }
+ 
+    old_fs = get_fs();
+-   set_fs(get_ds());
++   set_fs(KERNEL_DS);
+ 
+    /*
+     * Always write sizeof(uint64) bytes. This works fine for eventfd and
+From 48812705d760a0dc760420ce495e34ce4d019b92 Mon Sep 17 00:00:00 2001
+From: Michal Kubecek <mkubecek@suse.cz>
+Date: Sat, 9 Mar 2019 11:11:29 +0100
+Subject: [PATCH] vmmon: fix return type of vm_operations_struct::fault handler
+
+Commit 3d3539018d2c ("mm: create the new vm_fault_t type") in mainline
+5.1-rc1 changed the definition of vm_fault_t type to unsigned to catch
+vm_operations_struct::fault handlers which still have int as return value.
+LinuxDriverFault() in vmmon module is one of those.
+
+As handler return type was changed by commit 1c8f422059ae ("mm: change
+return type to vm_fault_t") in 4.17-rc1, make LinuxDriverFault() always
+return vm_fault_t and define vm_fault_t as int when building against
+a pre-4.17 kernel. (Except for the branch for really old kernels where
+the handler was vm_operations_struct::nopage and returned a pointer to
+struct page.)
+---
+ vmmon-only/linux/driver.c | 13 ++++++++-----
+ 1 file changed, 8 insertions(+), 5 deletions(-)
+
+diff --git a/vmmon-only/linux/driver.c b/vmmon-only/linux/driver.c
+index cdc7fc1..fd9fdac 100644
+--- a/vmmon-only/linux/driver.c
++++ b/vmmon-only/linux/driver.c
+@@ -81,6 +81,9 @@ static Bool LinuxDriverCheckPadding(void);
+ 
+ struct VMXLinuxState linuxState;
+ 
++#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 17, 0)
++typedef int vm_fault_t;
++#endif
+ 
+ /*
+  *----------------------------------------------------------------------
+@@ -110,9 +113,9 @@ long LinuxDriver_Ioctl(struct file *filp, u_int iocmd,
+ static int LinuxDriver_Close(struct inode *inode, struct file *filp);
+ static unsigned int LinuxDriverPoll(struct file *file, poll_table *wait);
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
+-static int LinuxDriverFault(struct vm_fault *fault);
++static vm_fault_t LinuxDriverFault(struct vm_fault *fault);
+ #elif defined(VMW_NOPAGE_2624)
+-static int LinuxDriverFault(struct vm_area_struct *vma, struct vm_fault *fault);
++static vm_fault_t LinuxDriverFault(struct vm_area_struct *vma, struct vm_fault *fault);
+ #else
+ static struct page *LinuxDriverNoPage(struct vm_area_struct *vma,
+                                       unsigned long address,
+@@ -940,11 +943,11 @@ LinuxDriverPollTimeout(compat_timer_arg_t unused)  // IN:
+  */
+ 
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
+-static int
++static vm_fault_t
+ LinuxDriverFault(struct vm_fault *fault)     //IN/OUT
+ #elif defined(VMW_NOPAGE_2624)
+-static int LinuxDriverFault(struct vm_area_struct *vma, //IN
+-                            struct vm_fault *fault)     //IN/OUT
++static vm_fault_t LinuxDriverFault(struct vm_area_struct *vma, //IN
++				   struct vm_fault *fault)     //IN/OUT
+ #else
+ static struct page *LinuxDriverNoPage(struct vm_area_struct *vma, //IN
+                                       unsigned long address,      //IN