May 2018 - Linux-stable-mirror

[PATCH] mfd: intel-lpss: Fix Intel Cannon Lake LPSS I2C input clock

by Jarkko Nikula

Intel Cannon Lake PCH has much higher 216 MHz input clock to LPSS I2C than Sunrisepoint which uses 120 MHz. Preliminary information was that both share the same clock rate but actual silicon implements elevated rate for better support for 3.4 MHz high-speed I2C. This incorrect input clock rate results too high I2C bus clock in case ACPI doesn't provide tuned I2C timing parameters since I2C host controller driver calculates them from input clock rate. Fix this by using the correct rate. We still share the same 230 ns SDA hold time value than Sunrisepoint. Cc: stable(a)vger.kernel.org Fixes: b418bbff36dd ("mfd: intel-lpss: Add Intel Cannonlake PCI IDs") Reported-by: Jian-Hong Pan <jian-hong(a)endlessm.com> Reported-by: Chris Chiu <chiu(a)endlessm.com> Reported-by: Daniel Drake <drake(a)endlessm.com> Signed-off-by: Jarkko Nikula <jarkko.nikula(a)linux.intel.com> --- Hi Jian-Hong, Chris and Daniel. Could you test does this fix your touchpad issue? --- drivers/mfd/intel-lpss-pci.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/mfd/intel-lpss-pci.c b/drivers/mfd/intel-lpss-pci.c index d1c46de89eb4..d9ae983095c5 100644 --- a/drivers/mfd/intel-lpss-pci.c +++ b/drivers/mfd/intel-lpss-pci.c @@ -124,6 +124,11 @@ static const struct intel_lpss_platform_info apl_i2c_info = { .properties = apl_i2c_properties, }; +static const struct intel_lpss_platform_info cnl_i2c_info = { + .clk_rate = 216000000, + .properties = spt_i2c_properties, +}; + static const struct pci_device_id intel_lpss_pci_ids[] = { /* BXT A-Step */ { PCI_VDEVICE(INTEL, 0x0aac), (kernel_ulong_t)&bxt_i2c_info }, @@ -207,13 +212,13 @@ static const struct pci_device_id intel_lpss_pci_ids[] = { { PCI_VDEVICE(INTEL, 0x9daa), (kernel_ulong_t)&spt_info }, { PCI_VDEVICE(INTEL, 0x9dab), (kernel_ulong_t)&spt_info }, { PCI_VDEVICE(INTEL, 0x9dfb), (kernel_ulong_t)&spt_info }, - { PCI_VDEVICE(INTEL, 0x9dc5), (kernel_ulong_t)&spt_i2c_info }, - { PCI_VDEVICE(INTEL, 0x9dc6), (kernel_ulong_t)&spt_i2c_info }, + { PCI_VDEVICE(INTEL, 0x9dc5), (kernel_ulong_t)&cnl_i2c_info }, + { PCI_VDEVICE(INTEL, 0x9dc6), (kernel_ulong_t)&cnl_i2c_info }, { PCI_VDEVICE(INTEL, 0x9dc7), (kernel_ulong_t)&spt_uart_info }, - { PCI_VDEVICE(INTEL, 0x9de8), (kernel_ulong_t)&spt_i2c_info }, - { PCI_VDEVICE(INTEL, 0x9de9), (kernel_ulong_t)&spt_i2c_info }, - { PCI_VDEVICE(INTEL, 0x9dea), (kernel_ulong_t)&spt_i2c_info }, - { PCI_VDEVICE(INTEL, 0x9deb), (kernel_ulong_t)&spt_i2c_info }, + { PCI_VDEVICE(INTEL, 0x9de8), (kernel_ulong_t)&cnl_i2c_info }, + { PCI_VDEVICE(INTEL, 0x9de9), (kernel_ulong_t)&cnl_i2c_info }, + { PCI_VDEVICE(INTEL, 0x9dea), (kernel_ulong_t)&cnl_i2c_info }, + { PCI_VDEVICE(INTEL, 0x9deb), (kernel_ulong_t)&cnl_i2c_info }, /* SPT-H */ { PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info }, { PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info }, @@ -240,10 +245,10 @@ static const struct pci_device_id intel_lpss_pci_ids[] = { { PCI_VDEVICE(INTEL, 0xa32b), (kernel_ulong_t)&spt_info }, { PCI_VDEVICE(INTEL, 0xa37b), (kernel_ulong_t)&spt_info }, { PCI_VDEVICE(INTEL, 0xa347), (kernel_ulong_t)&spt_uart_info }, - { PCI_VDEVICE(INTEL, 0xa368), (kernel_ulong_t)&spt_i2c_info }, - { PCI_VDEVICE(INTEL, 0xa369), (kernel_ulong_t)&spt_i2c_info }, - { PCI_VDEVICE(INTEL, 0xa36a), (kernel_ulong_t)&spt_i2c_info }, - { PCI_VDEVICE(INTEL, 0xa36b), (kernel_ulong_t)&spt_i2c_info }, + { PCI_VDEVICE(INTEL, 0xa368), (kernel_ulong_t)&cnl_i2c_info }, + { PCI_VDEVICE(INTEL, 0xa369), (kernel_ulong_t)&cnl_i2c_info }, + { PCI_VDEVICE(INTEL, 0xa36a), (kernel_ulong_t)&cnl_i2c_info }, + { PCI_VDEVICE(INTEL, 0xa36b), (kernel_ulong_t)&cnl_i2c_info }, { } }; MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids); -- 2.17.0

5 years, 11 months

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[PATCH 4.14 1/4] powerpc/mm/slice: Remove intermediate bitmap copy

by Christophe Leroy

[ Upstream commit 326691ad4f179e6edc7eb1271e618dd673e4736d ] bitmap_or() and bitmap_andnot() can work properly with dst identical to src1 or src2. There is no need of an intermediate result bitmap that is copied back to dst in a second step. Signed-off-by: Christophe Leroy <christophe.leroy(a)c-s.fr> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar(a)linux.vnet.ibm.com> Reviewed-by: Nicholas Piggin <npiggin(a)gmail.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> --- arch/powerpc/mm/slice.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c index a4f93699194b..b79897bb89e3 100644 --- a/arch/powerpc/mm/slice.c +++ b/arch/powerpc/mm/slice.c @@ -379,21 +379,17 @@ static unsigned long slice_find_area(struct mm_struct *mm, unsigned long len, static inline void slice_or_mask(struct slice_mask *dst, struct slice_mask *src) { - DECLARE_BITMAP(result, SLICE_NUM_HIGH); - dst->low_slices |= src->low_slices; - bitmap_or(result, dst->high_slices, src->high_slices, SLICE_NUM_HIGH); - bitmap_copy(dst->high_slices, result, SLICE_NUM_HIGH); + bitmap_or(dst->high_slices, dst->high_slices, src->high_slices, + SLICE_NUM_HIGH); } static inline void slice_andnot_mask(struct slice_mask *dst, struct slice_mask *src) { - DECLARE_BITMAP(result, SLICE_NUM_HIGH); - dst->low_slices &= ~src->low_slices; - bitmap_andnot(result, dst->high_slices, src->high_slices, SLICE_NUM_HIGH); - bitmap_copy(dst->high_slices, result, SLICE_NUM_HIGH); + bitmap_andnot(dst->high_slices, dst->high_slices, src->high_slices, + SLICE_NUM_HIGH); } #ifdef CONFIG_PPC_64K_PAGES -- 2.13.3

5 years, 11 months

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[PATCH] softirq: reorder trace_softirqs_on to prevent lockdep splat

by Joel Fernandes

I'm able to reproduce a lockdep splat with config options: CONFIG_PROVE_LOCKING=y, CONFIG_DEBUG_LOCK_ALLOC=y and CONFIG_PREEMPTIRQ_EVENTS=y $ echo 1 > /d/tracing/events/preemptirq/preempt_enable/enable --- [ 26.112609] DEBUG_LOCKS_WARN_ON(current->softirqs_enabled) [ 26.112636] WARNING: CPU: 0 PID: 118 at kernel/locking/lockdep.c:3854 [...] [ 26.144229] Call Trace: [ 26.144926] <IRQ> [ 26.145506] lock_acquire+0x55/0x1b0 [ 26.146499] ? __do_softirq+0x46f/0x4d9 [ 26.147571] ? __do_softirq+0x46f/0x4d9 [ 26.148646] trace_preempt_on+0x8f/0x240 [ 26.149744] ? trace_preempt_on+0x4d/0x240 [ 26.150862] ? __do_softirq+0x46f/0x4d9 [ 26.151930] preempt_count_sub+0x18a/0x1a0 [ 26.152985] __do_softirq+0x46f/0x4d9 [ 26.153937] irq_exit+0x68/0xe0 [ 26.154755] smp_apic_timer_interrupt+0x271/0x280 [ 26.156056] apic_timer_interrupt+0xf/0x20 [ 26.157105] </IRQ> The issue was this: preempt_count = 1 << SOFTIRQ_SHIFT __local_bh_enable(cnt = 1 << SOFTIRQ_SHIFT) { if (softirq_count() == (cnt && SOFTIRQ_MASK)) { trace_softirqs_on() { current->softirqs_enabled = 1; } } preempt_count_sub(cnt) { trace_preempt_on() { tracepoint() { rcu_read_lock_sched() { // jumps into lockdep Where preempt_count still has softirqs disabled, but current->softirqs_enabled is true, and we get a splat. Cc: Steven Rostedt <rostedt(a)goodmis.org> Cc: Peter Zilstra <peterz(a)infradead.org> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Cc: Tom Zanussi <tom.zanussi(a)linux.intel.com> Cc: Namhyung Kim <namhyung(a)kernel.org> Cc: Thomas Glexiner <tglx(a)linutronix.de> Cc: Boqun Feng <boqun.feng(a)gmail.com> Cc: Paul McKenney <paulmck(a)linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec(a)gmail.com> Cc: Randy Dunlap <rdunlap(a)infradead.org> Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Fenguang Wu <fengguang.wu(a)intel.com> Cc: Baohong Liu <baohong.liu(a)intel.com> Cc: Vedang Patel <vedang.patel(a)intel.com> Cc: kernel-team(a)android.com Cc: stable(a)vger.kernel.org Reviewed-by: Steven Rostedt (VMware) <rostedt(a)goodmis.org> Fixes: d59158162e032 ("tracing: Add support for preempt and irq enable/disable events") Signed-off-by: Joel Fernandes <joelaf(a)google.com> --- kernel/softirq.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/kernel/softirq.c b/kernel/softirq.c index 24d243ef8e71..47e2f61938c0 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -139,9 +139,13 @@ static void __local_bh_enable(unsigned int cnt) { lockdep_assert_irqs_disabled(); + if (preempt_count() == cnt) + trace_preempt_on(CALLER_ADDR0, get_lock_parent_ip()); + if (softirq_count() == (cnt & SOFTIRQ_MASK)) trace_softirqs_on(_RET_IP_); - preempt_count_sub(cnt); + + __preempt_count_sub(cnt); } /* -- 2.17.0.441.gb46fe60e1d-goog

5 years, 11 months

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[PATCH v3] net/mlx4_en: fix potential use-after-free with dma_unmap_page

by Sarah Newman

[ Not relevant upstream, therefore no upstream commit. ] To fix, unmap the page as soon as possible. When swiotlb is in use, calling dma_unmap_page means that the original page mapped with dma_map_page must still be valid, as swiotlb will copy data from its internal cache back to the originally requested DMA location. When GRO is enabled, before this patch all references to the original frag may be put and the page freed before dma_unmap_page in mlx4_en_free_frag is called. It is possible there is a path where the use-after-free occurs even with GRO disabled, but this has not been observed so far. The bug can be trivially detected by doing the following: * Compile the kernel with DEBUG_PAGEALLOC * Run the kernel as a Xen Dom0 * Leave GRO enabled on the interface * Run a 10 second or more test with iperf over the interface. This bug was likely introduced in commit 4cce66cdd14a ("mlx4_en: map entire pages to increase throughput"), first part of u3.6. It was incidentally fixed in commit 34db548bfb95 ("mlx4: add page recycling in receive path"), first part of v4.12. This version applies to the v4.9 series. Signed-off-by: Sarah Newman <srn(a)prgmr.com> Tested-by: Sarah Newman <srn(a)prgmr.com> --- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 32 +++++++++++++++++++----------- 1 file changed, 20 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 844f5ad..abe2b43 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -142,16 +142,17 @@ static void mlx4_en_free_frag(struct mlx4_en_priv *priv, struct mlx4_en_rx_alloc *frags, int i) { - const struct mlx4_en_frag_info *frag_info = &priv->frag_info[i]; - u32 next_frag_end = frags[i].page_offset + 2 * frag_info->frag_stride; - - - if (next_frag_end > frags[i].page_size) - dma_unmap_page(priv->ddev, frags[i].dma, frags[i].page_size, - frag_info->dma_dir); + if (frags[i].page) { + const struct mlx4_en_frag_info *frag_info = &priv->frag_info[i]; + u32 next_frag_end = frags[i].page_offset + + 2 * frag_info->frag_stride; - if (frags[i].page) + if (next_frag_end > frags[i].page_size) { + dma_unmap_page(priv->ddev, frags[i].dma, + frags[i].page_size, frag_info->dma_dir); + } put_page(frags[i].page); + } } static int mlx4_en_init_allocator(struct mlx4_en_priv *priv, @@ -586,21 +587,28 @@ static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv, int length) { struct skb_frag_struct *skb_frags_rx = skb_shinfo(skb)->frags; - struct mlx4_en_frag_info *frag_info; int nr; dma_addr_t dma; /* Collect used fragments while replacing them in the HW descriptors */ for (nr = 0; nr < priv->num_frags; nr++) { - frag_info = &priv->frag_info[nr]; + struct mlx4_en_frag_info *frag_info = &priv->frag_info[nr]; + u32 next_frag_end = frags[nr].page_offset + + 2 * frag_info->frag_stride; + if (length <= frag_info->frag_prefix_size) break; if (unlikely(!frags[nr].page)) goto fail; dma = be64_to_cpu(rx_desc->data[nr].addr); - dma_sync_single_for_cpu(priv->ddev, dma, frag_info->frag_size, - DMA_FROM_DEVICE); + if (next_frag_end > frags[nr].page_size) + dma_unmap_page(priv->ddev, frags[nr].dma, + frags[nr].page_size, frag_info->dma_dir); + else + dma_sync_single_for_cpu(priv->ddev, dma, + frag_info->frag_size, + DMA_FROM_DEVICE); /* Save page reference in skb */ __skb_frag_set_page(&skb_frags_rx[nr], frags[nr].page); -- 1.9.1

5 years, 11 months

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[PATCH 0/2] 4.14 long term stable ZBC fixes

by Damien Le Moal

Patch 0aa3fdb8b3a6 ("scsi: sd_zbc: Fix potential memory leak") was added in 4.16 and 4.15 stable but did not make it to long term stable 4.14 (as far as I can tell). Patch ccce20fc7968 ("scsi: sd_zbc: Avoid that resetting a zone fails sporadically") is included in 4.16 but does not apply to 4.15 stable nor to 4.14 long term stable and requires extensive modifications. This small series provides a backport of both patches against 4.14. Please consider these patches for inclusion in this long term stable kernel. Bart Van Assche (1): scsi: sd_zbc: Avoid that resetting a zone fails sporadically Damien Le Moal (1): scsi: sd_zbc: Fix potential memory leak drivers/scsi/sd_zbc.c | 128 +++++++++++++++++++++++++----------------- 1 file changed, 76 insertions(+), 52 deletions(-) -- 2.17.0

5 years, 11 months

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[PATCH ] dmaengine: usb-dmac: fix endless loop in usb_dmac_chan_terminate_all()

by Biju Das

From: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> commit d9f5efade2cfd729138a7cafb46d01044da40f5e upstream This patch fixes an issue that list_for_each_entry() in usb_dmac_chan_terminate_all() is possible to cause endless loop because this will move own desc to the desc_freed. So, this driver should use list_for_each_entry_safe() instead of list_for_each_entry(). Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> Signed-off-by: Vinod Koul <vinod.koul(a)intel.com> [biju: cherry-pick to 4.4] Signed-off-by: Biju Das <biju.das(a)bp.renesas.com> --- Hello Greg, I have observed a CPU lock condition with USB DMAC driver on koelsch platform. This patch fixes the issue on 4.4 stable. It is reproducible with ethernet(RNDIS/ECM) gadget configuration. regards, Biju drivers/dma/sh/usb-dmac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c index 56410ea..6682b3e 100644 --- a/drivers/dma/sh/usb-dmac.c +++ b/drivers/dma/sh/usb-dmac.c @@ -448,7 +448,7 @@ usb_dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, static int usb_dmac_chan_terminate_all(struct dma_chan *chan) { struct usb_dmac_chan *uchan = to_usb_dmac_chan(chan); - struct usb_dmac_desc *desc; + struct usb_dmac_desc *desc, *_desc; unsigned long flags; LIST_HEAD(head); LIST_HEAD(list); @@ -459,7 +459,7 @@ static int usb_dmac_chan_terminate_all(struct dma_chan *chan) if (uchan->desc) uchan->desc = NULL; list_splice_init(&uchan->desc_got, &list); - list_for_each_entry(desc, &list, node) + list_for_each_entry_safe(desc, _desc, &list, node) list_move_tail(&desc->node, &uchan->desc_freed); spin_unlock_irqrestore(&uchan->vc.lock, flags); vchan_dma_desc_free_list(&uchan->vc, &head); -- 2.7.4

5 years, 11 months

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[PATCH 0/3] Fix double address byte issue

by Fabrizio Castro

Hello Greg, Wolfram recommends the backporting of this series in order to improve the situation with a race condition. Do you think you can take this series for 4.4 stable? This series applies on 4.4.133, and depends on series: "Fix R-Car I2C data byte sent twice issue" Thanks, Fab Wolfram Sang (3): i2c: rcar: don't issue stop when HW does it automatically i2c: rcar: check master irqs before slave irqs i2c: rcar: revoke START request early drivers/i2c/busses/i2c-rcar.c | 36 ++++++++++++------------------------ 1 file changed, 12 insertions(+), 24 deletions(-) -- 2.7.4

5 years, 11 months

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[PATCH 0/6] Fix R-Car I2C data byte sent twice issue

by Fabrizio Castro

Hello Greg, this series fixes an issue with the I2C driver of the Renesas R-Car and RZ/G1 family of chips. The issue is clearly visible with the CIP kernel (4.4) running on a iwg20d board from iWave due to the way the bq32000 driver/device is interacting with the I2C driver/controller. In the stable kernel (4.4) there is no support for the iwg20d, I tried to replicate the same problem on a Koelsch board with no success, but the problem is there. Do you think this series is suitable for (4.4) stable considering I can't reproduce the problem on the Koelsch board? This patches apply on top of 4.4.133. Thanks, Fab Wolfram Sang (6): i2c: rcar: make sure clocks are on when doing clock calculation i2c: rcar: rework hw init i2c: rcar: remove unused IOERROR state i2c: rcar: remove spinlock i2c: rcar: refactor setup of a msg i2c: rcar: init new messages in irq drivers/i2c/busses/i2c-rcar.c | 166 ++++++++++++++++++------------------------ 1 file changed, 72 insertions(+), 94 deletions(-) -- 2.7.4

5 years, 11 months

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[PATCH v4.4.y..v4.14.y] tcp: avoid integer overflows in tcp_rcv_space_adjust()

by Guenter Roeck

From: Eric Dumazet <edumazet(a)google.com> commit 607065bad9931e72207b0cac365d7d4abc06bd99 upstream. When using large tcp_rmem[2] values (I did tests with 500 MB), I noticed overflows while computing rcvwin. Lets fix this before the following patch. Signed-off-by: Eric Dumazet <edumazet(a)google.com> Acked-by: Soheil Hassas Yeganeh <soheil(a)google.com> Acked-by: Wei Wang <weiwan(a)google.com> Acked-by: Neal Cardwell <ncardwell(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> [Backport: sysctl_tcp_rmem is not Namespace-ify'd in older kernels] Signed-off-by: Guenter Roeck <linux(a)roeck-us.net> --- Applies cleanly to v4.4.y and v4.9.y; v4.14.y needs "git am -3". include/linux/tcp.h | 2 +- net/ipv4/tcp_input.c | 10 ++++++---- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 2260f92f1492..5b6df1a8dc74 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -324,7 +324,7 @@ struct tcp_sock { /* Receiver queue space */ struct { - int space; + u32 space; u32 seq; u32 time; } rcvq_space; diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index ed018760502e..23b95aead897 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -557,8 +557,8 @@ static inline void tcp_rcv_rtt_measure_ts(struct sock *sk, void tcp_rcv_space_adjust(struct sock *sk) { struct tcp_sock *tp = tcp_sk(sk); + u32 copied; int time; - int copied; time = tcp_time_stamp - tp->rcvq_space.time; if (time < (tp->rcv_rtt_est.rtt >> 3) || tp->rcv_rtt_est.rtt == 0) @@ -580,12 +580,13 @@ void tcp_rcv_space_adjust(struct sock *sk) if (sysctl_tcp_moderate_rcvbuf && !(sk->sk_userlocks & SOCK_RCVBUF_LOCK)) { - int rcvwin, rcvmem, rcvbuf; + int rcvmem, rcvbuf; + u64 rcvwin; /* minimal window to cope with packet losses, assuming * steady state. Add some cushion because of small variations. */ - rcvwin = (copied << 1) + 16 * tp->advmss; + rcvwin = ((u64)copied << 1) + 16 * tp->advmss; /* If rate increased by 25%, * assume slow start, rcvwin = 3 * copied @@ -605,7 +606,8 @@ void tcp_rcv_space_adjust(struct sock *sk) while (tcp_win_from_space(rcvmem) < tp->advmss) rcvmem += 128; - rcvbuf = min(rcvwin / tp->advmss * rcvmem, sysctl_tcp_rmem[2]); + do_div(rcvwin, tp->advmss); + rcvbuf = min_t(u64, rcvwin * rcvmem, sysctl_tcp_rmem[2]); if (rcvbuf > sk->sk_rcvbuf) { sk->sk_rcvbuf = rcvbuf; -- 2.7.4

5 years, 11 months

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[PATCH 0/3] Correct 4.9 stable commit 944e0fc51a89c98

by Juergen Gross

Above commit is a wrong backport, as it is based on a missing prerequisite patch. Correct that by reverting said commit, include the missing patch, and do the backport correctly. Juergen Gross (3): x86/amd: revert commit 944e0fc51a89c9827b98813d65dc083274777c7f xen: set cpu capabilities from xen_start_kernel() x86/amd: don't set X86_BUG_SYSRET_SS_ATTRS when running under Xen arch/x86/xen/enlighten.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) -- 2.13.6

5 years, 11 months

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