Messages in this thread Patch in this message | | | Date | Fri, 5 Aug 2016 18:54:16 +0200 | From | Sebastian Andrzej Siewior <> | Subject | [ANNOUNCE] 4.6.5-rt10 |
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Dear RT folks!
I'm pleased to announce the v4.6.5-rt10 patch set.
Changes since v4.6.5-rt9:
- Added missing cpu_light_get() in the scsi fcoe driver. Patch by Mike Galbraith.
- Under a special a condition (a preempted TLB flush in do_exit()) it was possible on x86-UP to enter endless pagefaults. The pagefaults stopped after a context switch.
Known issues - CPU hotplug got a little better but can deadlock.
The delta patch against 4.6.5-rt9 is appended below and can be found here:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.6/incr/patch-4.6.5-rt9-rt10.patch.xz
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v4.6.5-rt10
The RT patch against 4.6.5 can be found here:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.6/patch-4.6.5-rt10.patch.xz
The split quilt queue is available at:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.6/patches-4.6.5-rt10.tar.xz
Sebastian
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h index 1fde8d580a5b..b202084a7c35 100644 --- a/arch/x86/include/asm/tlbflush.h +++ b/arch/x86/include/asm/tlbflush.h @@ -135,7 +135,14 @@ static inline void cr4_set_bits_and_update_boot(unsigned long mask) static inline void __native_flush_tlb(void) { + /* + * if current->mm == NULL then we borrow a mm which may change during a + * task switch and therefore we must not be preempted while we write CR3 + * back. + */ + preempt_disable(); native_write_cr3(native_read_cr3()); + preempt_enable(); } static inline void __native_flush_tlb_global_irq_disabled(void) diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 3d232657218d..908056efbaf8 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -1814,7 +1814,7 @@ static void fcoe_recv_frame(struct sk_buff *skb) */ hp = (struct fcoe_hdr *) skb_network_header(skb); - stats = per_cpu_ptr(lport->stats, get_cpu()); + stats = per_cpu_ptr(lport->stats, get_cpu_light()); if (unlikely(FC_FCOE_DECAPS_VER(hp) != FC_FCOE_VER)) { if (stats->ErrorFrames < 5) printk(KERN_WARNING "fcoe: FCoE version " diff --git a/localversion-rt b/localversion-rt index 22746d6390a4..d79dde624aaa 100644 --- a/localversion-rt +++ b/localversion-rt @@ -1 +1 @@ --rt9 +-rt10
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