Konrad Rzeszutek Wilk 26a7999527 xen/smp: Update pv_lock_ops functions before alternative code starts under PVHVM ... Before this patch we would patch all of the pv_lock_ops sites using alternative assembler. Then later in the bootup cycle change the unlock_kick and lock_spinning to the Xen specific - without re patching. That meant that for the core of the kernel we would be running with the baremetal version of unlock_kick and lock_spinning while for modules we would have the proper Xen specific slowpaths. As most of the module uses some API from the core kernel that ended up with slowpath lockers waiting forever to be kicked (b/c they would be using the Xen specific slowpath logic). And the kick never came b/c the unlock path that was taken was the baremetal one. On PV we do not have the problem as we initialise before the alternative code kicks in. The fix is to make the updating of the pv_lock_ops function be done before the alternative code starts patching. Note that this patch fixes issues discovered by commit f10cd522c5. ("xen: disable PV spinlocks on HVM") wherein it mentioned PV spinlocks cannot possibly work with the current code because they are enabled after pvops patching has already been done, and because PV spinlocks use a different data structure than native spinlocks so we cannot switch between them dynamically. The first problem is solved by this patch. The second problem has been solved by commit 816434ec4a (Merge branch 'x86-spinlocks-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip) P.S. There is still the commit 70dd4998cb (xen/spinlock: Disable IRQ spinlock (PV) allocation on PVHVM) to revert but that can be done later after all other bugs have been fixed. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>		2013-09-09 12:06:31 -04:00
..
boot	x86, efi: correct call to free_pages	2013-07-26 15:22:32 +01:00
configs	x86, platform, kvm, kconfig: Turn existing .config's into KVM-capable configs	2013-05-28 12:11:32 +02:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2013-07-24 11:05:18 -07:00
ia32	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
include	Linux 3.11-rc7	2013-09-09 12:05:37 -04:00
kernel	Linux 3.11-rc7	2013-09-09 12:05:37 -04:00
kvm	KVM: MMU: avoid fast page fault fixing mmio page fault	2013-07-18 12:26:57 +02:00
lguest	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-07-06 14:09:38 -07:00
lib	Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS	2013-04-30 17:04:09 -07:00
math-emu
mm	x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member	2013-08-22 10:19:35 -07:00
net	x86: bpf_jit_comp: secure bpf jit against spraying attacks	2013-05-19 23:55:41 -07:00
oprofile
pci	x86: delete __cpuinit usage from all x86 files	2013-07-14 19:36:56 -04:00
platform	arch/x86/platform/ce4100/ce4100.c: include reboot.h	2013-07-31 14:41:02 -07:00
power	x86, gdt, hibernate: Store/load GDT for hibernate path.	2013-05-02 11:27:35 -07:00
realmode	x86, relocs: Refactor the relocs tool to merge 32- and 64-bit ELF	2013-04-16 16:02:58 -07:00
syscalls	unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE	2013-05-09 13:46:38 -04:00
tools	x86, relocs: Move __vvar_page from S_ABS to S_REL	2013-06-12 15:14:57 -07:00
um	um: remove dead code	2013-07-19 11:35:32 +02:00
vdso	x86/vdso: Convert use of typedef ctl_table to struct ctl_table	2013-06-19 15:06:09 +02:00
video
xen	xen/smp: Update pv_lock_ops functions before alternative code starts under PVHVM	2013-09-09 12:06:31 -04:00
.gitignore
Kbuild
Kconfig	kvm guest: Add configuration support to enable debug information for KVM Guests	2013-08-09 07:54:18 -07:00
Kconfig.cpu	x86, 386 removal: Document Nx586 as a 386 and thus unsupported	2012-11-29 13:28:39 -08:00
Kconfig.debug	Merge branch 'kconfig-diet' from Dave Hansen	2013-07-04 11:25:51 -07:00
Makefile	x86/platform: Add kvmconfig to the phony targets	2013-06-23 12:17:35 +02:00
Makefile_32.cpu
Makefile.um