diff options
Diffstat (limited to 'x86-xen-suppress-hugetlbfs-in-PV-guests.patch')
| -rw-r--r-- | x86-xen-suppress-hugetlbfs-in-PV-guests.patch | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/x86-xen-suppress-hugetlbfs-in-PV-guests.patch b/x86-xen-suppress-hugetlbfs-in-PV-guests.patch deleted file mode 100644 index 1b7c8f24a..000000000 --- a/x86-xen-suppress-hugetlbfs-in-PV-guests.patch +++ /dev/null @@ -1,70 +0,0 @@ -From 72c339e0c6d9969e664c2cf63e162753d7d859ae Mon Sep 17 00:00:00 2001 -From: Jan Beulich <jbeulich@suse.com> -Date: Thu, 14 Apr 2016 13:03:47 +0000 -Subject: [PATCH] x86/xen: suppress hugetlbfs in PV guests - -Huge pages are not normally available to PV guests. Not suppressing -hugetlbfs use results in an endless loop of page faults when user mode -code tries to access a hugetlbfs mapped area (since the hypervisor -denies such PTEs to be created, but error indications can't be -propagated out of xen_set_pte_at(), just like for various of its -siblings), and - once killed in an oops like this: - -kernel BUG at .../fs/hugetlbfs/inode.c:428! -invalid opcode: 0000 [#1] SMP -Modules linked in: ... -Supported: Yes -CPU: 2 PID: 6088 Comm: hugetlbfs Tainted: G W 4.4.0-2016-01-20-pv #2 -Hardware name: ... -task: ffff8808059205c0 ti: ffff880803c84000 task.ti: ffff880803c84000 -RIP: e030:[<ffffffff811c333b>] [<ffffffff811c333b>] remove_inode_hugepages+0x25b/0x320 -RSP: e02b:ffff880803c879a8 EFLAGS: 00010202 -RAX: 000000000077a4db RBX: ffffea001acff000 RCX: 0000000078417d38 -RDX: 0000000000000000 RSI: 000000007e154fa7 RDI: ffff880805d70960 -RBP: 0000000000000960 R08: 0000000000000000 R09: 0000000000000000 -R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 -R13: ffff880807486018 R14: 0000000000000000 R15: ffff880803c87af0 -FS: 00007f85fa8b8700(0000) GS:ffff88080b640000(0000) knlGS:0000000000000000 -CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b -CR2: 00007f85fa000000 CR3: 0000000001a0a000 CR4: 0000000000040660 -Stack: - ffff880000000fb0 ffff880803c87a18 ffff880803c87ae8 ffff8808059205c0 - ffff880803c87af0 ffff880803c87ae8 ffff880807486018 0000000000000000 - ffffffff81bf6e60 ffff880807486168 000003ffffffffff 0000000003c87758 -Call Trace: - [<ffffffff811c3415>] hugetlbfs_evict_inode+0x15/0x40 - [<ffffffff81167b3d>] evict+0xbd/0x1b0 - [<ffffffff8116514a>] __dentry_kill+0x19a/0x1f0 - [<ffffffff81165b0e>] dput+0x1fe/0x220 - [<ffffffff81150535>] __fput+0x155/0x200 - [<ffffffff81079fc0>] task_work_run+0x60/0xa0 - [<ffffffff81063510>] do_exit+0x160/0x400 - [<ffffffff810637eb>] do_group_exit+0x3b/0xa0 - [<ffffffff8106e8bd>] get_signal+0x1ed/0x470 - [<ffffffff8100f854>] do_signal+0x14/0x110 - [<ffffffff810030e9>] prepare_exit_to_usermode+0xe9/0xf0 - [<ffffffff814178a5>] retint_user+0x8/0x13 - -This is XSA-174. - -Signed-off-by: Jan Beulich <jbeulich@suse.com> -Cc: stable@vger.kernel.org ---- - arch/x86/include/asm/hugetlb.h | 1 + - 1 file changed, 1 insertion(+) - -diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h -index f8a29d2c97b0..e6a8613fbfb0 100644 ---- a/arch/x86/include/asm/hugetlb.h -+++ b/arch/x86/include/asm/hugetlb.h -@@ -4,6 +4,7 @@ - #include <asm/page.h> - #include <asm-generic/hugetlb.h> - -+#define hugepages_supported() cpu_has_pse - - static inline int is_hugepage_only_range(struct mm_struct *mm, - unsigned long addr, --- -2.5.5 - |