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2014-06-11clk: sunxi: document PRCM clock compatible stringsBoris BREZILLON1-0/+3
Document new compatible strings for clock provided by the PRCM (Power/Reset/Clock Management) unit. Signed-off-by: Boris BREZILLON <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sunxi: add PRCM (Power/Reset/Clock Management) clks supportBoris BREZILLON4-0/+411
The PRCM (Power/Reset/Clock Management) unit provides several clock devices: - AR100 clk: used to clock the Power Management co-processor - AHB0 clk: used to clock the AHB0 bus - APB0 clk and gates: used to clk peripherals connected to the APB0 bus Add support for these clks in a separate driver so that they can be probed as platform devices instead of registered during early init. This is needed to be able to probe PRCM MFD subdevices. Signed-off-by: Boris BREZILLON <[email protected]> Acked-by: Maxime Ripard <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sun6i: Protect SDRAM gating bitMaxime Ripard1-0/+1
Prevent the SDRAM controller from being gated by force-enabling it in the machine code. Signed-off-by: Maxime Ripard <[email protected]> Acked-by: Mike Turquette <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sun6i: Protect CPU clockMaxime Ripard1-0/+1
Right now, AHB is an indirect child clock of the CPU clock. If that happens to change, since the CPU clock has no other consumers declared in Linux, it would be shut down, which is not really a good idea. Prevent this by forcing it enabled. Signed-off-by: Maxime Ripard <[email protected]> Acked-by: Mike Turquette <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sunxi: Rework clock protection codeMaxime Ripard1-28/+44
Since we start to have a lot of clocks to protect, some of them in a few SoCs only, it becomes difficult to handle the clock protection without having to add per machine exceptions. Add per-SoC data to tell which clock to leave enabled. Signed-off-by: Maxime Ripard <[email protected]> Acked-by: Mike Turquette <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sunxi: Move the GMAC clock to a file of its ownMaxime Ripard3-99/+121
Since we have a folder of our own, we can actually make use of it by splitting the huge clock file into several sub drivers. The gmac clock is pretty easy to deal with, since it's pretty much isolated and doesn't have any dependency on the other clocks. Signed-off-by: Maxime Ripard <[email protected]> Acked-by: Mike Turquette <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sunxi: Move the 24M oscillator to a file of its ownMaxime Ripard3-57/+74
Since we have a folder of our own, we can actually make use of it by splitting the huge clock file into several sub drivers. The main oscillator is pretty easy to deal with, since it's pretty much isolated. Signed-off-by: Maxime Ripard <[email protected]> Acked-by: Mike Turquette <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sunxi: Remove calls to clk_putMaxime Ripard1-6/+2
Callers of clk_put must disable the clock first. This also means that as long as the clock is enabled the driver should hold a reference to that clock. Hence, the call to clk_put here are bogus and should be removed. Signed-off-by: Maxime Ripard <[email protected]> Acked-by: Mike Turquette <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sunxi: document new A31 USB clock compatibleEmilio López1-0/+1
Support for the USB gates and resets on A31 has been recently added using a new compatible, so let's document it here. Signed-off-by: Emilio López <[email protected]>
2014-06-11clk: sunxi: Implement A31 USB clockMaxime Ripard1-0/+6
The A31 USB clock slightly differ from its older counterparts, mostly because it has a different gate for each PHY, while the older one had a single gate for all the phy. Signed-off-by: Maxime Ripard <[email protected]> Reviewed-by: Hans de Goede <[email protected]> Acked-by: Mike Turquette <[email protected]> Signed-off-by: Emilio López <[email protected]>
2014-06-11amd-xgbe: Rename MAX_DMA_CHANNELS to avoid powerpc conflictLendacky, Thomas2-2/+2
MAX_DMA_CHANNELS is defined in asm/scatterlist.h of the powerpc architecture. Rename this #define in xgbe.h to avoid the redefined warning issued during compilation. Reported-by: Fengguang Wu <[email protected]> Signed-off-by: Tom Lendacky <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11net: fix UDP tunnel GSO of frag_list GRO packetsWei-Chun Chao1-1/+2
This patch fixes a kernel BUG_ON in skb_segment. It is hit when testing two VMs on openvswitch with one VM acting as VXLAN gateway. During VXLAN packet GSO, skb_segment is called with skb->data pointing to inner TCP payload. skb_segment calls skb_network_protocol to retrieve the inner protocol. skb_network_protocol actually expects skb->data to point to MAC and it calls pskb_may_pull with ETH_HLEN. This ends up pulling in ETH_HLEN data from header tail. As a result, pskb_trim logic is skipped and BUG_ON is hit later. Move skb_push in front of skb_network_protocol so that skb->data lines up properly. kernel BUG at net/core/skbuff.c:2999! Call Trace: [<ffffffff816ac412>] tcp_gso_segment+0x122/0x410 [<ffffffff816bc74c>] inet_gso_segment+0x13c/0x390 [<ffffffff8164b39b>] skb_mac_gso_segment+0x9b/0x170 [<ffffffff816b3658>] skb_udp_tunnel_segment+0xd8/0x390 [<ffffffff816b3c00>] udp4_ufo_fragment+0x120/0x140 [<ffffffff816bc74c>] inet_gso_segment+0x13c/0x390 [<ffffffff8109d742>] ? default_wake_function+0x12/0x20 [<ffffffff8164b39b>] skb_mac_gso_segment+0x9b/0x170 [<ffffffff8164b4d0>] __skb_gso_segment+0x60/0xc0 [<ffffffff8164b6b3>] dev_hard_start_xmit+0x183/0x550 [<ffffffff8166c91e>] sch_direct_xmit+0xfe/0x1d0 [<ffffffff8164bc94>] __dev_queue_xmit+0x214/0x4f0 [<ffffffff8164bf90>] dev_queue_xmit+0x10/0x20 [<ffffffff81687edb>] ip_finish_output+0x66b/0x890 [<ffffffff81688a58>] ip_output+0x58/0x90 [<ffffffff816c628f>] ? fib_table_lookup+0x29f/0x350 [<ffffffff816881c9>] ip_local_out_sk+0x39/0x50 [<ffffffff816cbfad>] iptunnel_xmit+0x10d/0x130 [<ffffffffa0212200>] vxlan_xmit_skb+0x1d0/0x330 [vxlan] [<ffffffffa02a3919>] vxlan_tnl_send+0x129/0x1a0 [openvswitch] [<ffffffffa02a2cd6>] ovs_vport_send+0x26/0xa0 [openvswitch] [<ffffffffa029931e>] do_output+0x2e/0x50 [openvswitch] Signed-off-by: Wei-Chun Chao <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11net: ipv6: Fixed up ipsec packet be re-routing issuehuizhang1-0/+1
Bug report on https://bugzilla.kernel.org/show_bug.cgi?id=75781 When a local output ipsec packet match the mangle table rule, and be set mark value, the packet will be route again in route_me_harder -> _session_decoder6 In this case, the nhoff in CB of skb was still the default value 0. So the protocal match can't success and the packet can't match correct SA rule,and then the packet be send out in plaintext. To fixed up the issue. The CB->nhoff must be set. Signed-off-by: Hui Zhang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11farsync: Fix confusion about DMA address and buffer offset typesBen Hutchings1-13/+8
Use dma_addr_t for DMA address parameters and u32 for shared memory offset parameters. Do not assume that dma_addr_t is the same as unsigned long; it will not be in PAE configurations. Truncate DMA addresses to 32 bits when printing them. This is OK because the DMA mask for this device is 32-bit (per default). Also rename the DMA address parameters from 'skb' to 'dma'. Compile-tested only. Signed-off-by: Ben Hutchings <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11ip_tunnel: fix i_key matching in ip_tunnel_findDmitry Popov1-2/+3
Some tunnels (though only vti as for now) can use i_key just for internal use: for example vti uses it for fwmark'ing incoming packets. So raw i_key value shouldn't be treated as a distinguisher for them. ip_tunnel_key_match exists for cases when we want to compare two ip_tunnel_parms' i_keys. Example bug: ip link add type vti ikey 1 local 1.0.0.1 remote 2.0.0.2 ip link add type vti ikey 2 local 1.0.0.1 remote 2.0.0.2 spawned two tunnels, although it doesn't make sense. Signed-off-by: Dmitry Popov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11Merge branch 'mlx4'David S. Miller2-5/+38
Or Gerlitz says: ==================== mlx4 SRIOV fixes The patch from Wei Yang is a designed fix to a regression introduced by earlier commit of him. Jack added a fix to the resource management which we got from IBM. Let's get that into 3.16-rc1 1st and later see to what stable version/s this should go. ==================== Signed-off-by: David S. Miller <[email protected]>
2014-06-11net/mlx4_core: Keep only one driver entry release mlx4_privWei Yang1-1/+1
Following commit befdf89 "net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()", there are two mlx4 pci callbacks which will attempt to release the mlx4_priv object -- .shutdown and .remove. This leads to a use-after-free access to the already freed mlx4_priv instance and trigger a "Kernel access of bad area" crash when both .shutdown and .remove are called. During reboot or kexec, .shutdown is called, with the VFs probed to the host going through shutdown first and then the PF. Later, the PF will trigger VFs' .remove since VFs still have driver attached. Fix that by keeping only one driver entry which releases mlx4_priv. Fixes: befdf89 ('net/mlx4_core: Preserve pci_dev_data after __mlx4_remove_one()') CC: Bjorn Helgaas <[email protected]> Signed-off-by: Or Gerlitz <[email protected]> Signed-off-by: Jack Morgenstein <[email protected]> Signed-off-by: Wei Yang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11net/mlx4_core: Fix SRIOV free-pool management when enforcing resource quotasJack Morgenstein1-4/+37
The Hypervisor driver tracks free slots and reserved slots at the global level and tracks allocated slots and guaranteed slots per VF. Guaranteed slots are treated as reserved by the driver, so the total reserved slots is the sum of all guaranteed slots over all the VFs. As VFs allocate resources, free (global) is decremented and allocated (per VF) is incremented for those resources. However, reserved (global) is never changed. This means that effectively, when a VF allocates a resource from its guaranteed pool, it is actually reducing that resource's free pool (since the global reserved count was not also reduced). The fix for this problem is the following: For each resource, as long as a VF's allocated count is <= its guaranteed number, when allocating for that VF, the reserved count (global) should be reduced by the allocation as well. When the global reserved count reaches zero, the remaining global free count is still accessible as the free pool for that resource. When the VF frees resources, the reverse happens: the global reserved count for a resource is incremented only once the VFs allocated number falls below its guaranteed number. This fix was developed by Rick Kready <[email protected]> Reported-by: Rick Kready <[email protected]> Signed-off-by: Jack Morgenstein <[email protected]> Signed-off-by: Or Gerlitz <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11ip_vti: Fix 'ip tunnel add' with 'key' parametersDmitry Popov2-5/+13
ip tunnel add remote 10.2.2.1 local 10.2.2.2 mode vti ikey 1 okey 2 translates to p->iflags = VTI_ISVTI|GRE_KEY and p->i_key = 1, but GRE_KEY != TUNNEL_KEY, so ip_tunnel_ioctl would set i_key to 0 (same story with o_key) making us unable to create vti tunnels with [io]key via ip tunnel. We cannot simply translate GRE_KEY to TUNNEL_KEY (as GRE module does) because vti_tunnels with same local/remote addresses but different ikeys will be treated as different then. So, imo the best option here is to move p->i_flags & *_KEY check for vti tunnels from ip_tunnel.c to ip_vti.c and to think about [io]_mark field for ip_tunnel_parm in the future. Signed-off-by: Dmitry Popov <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11net: wimax: i2400m: control.c: Cleaning up conjunction always evaluates to falseRickard Strandqvist1-1/+1
Logical conjunction always evaluates to false: minor < 2 && minor > 1 I guess what you wanted is rather: minor > 2 || minor < 1 This was partly found using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11net: ethernet: toshiba: ps3_gelic_net.c: Cleaning up a check on a memory ↵Rickard Strandqvist1-1/+1
allocation A check on a memory allocation is checked incorrectly. This was partly found using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <[email protected]> Acked-by: Geoff Levand <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11amd-xgbe: fix unused variable compilation warning in phylib driverfrançois romieu1-1/+1
Fix following compilation warning: [...] CC drivers/net/phy/amd-xgbe-phy.o drivers/net/phy/amd-xgbe-phy.c:1353:30: warning: ‘amd_xgbe_phy_ids’ defined but not used [-Wunused-variable] static struct mdio_device_id amd_xgbe_phy_ids[] = { ^ Signed-off-by: Francois Romieu <[email protected]> Acked-by: Tom Lendacky <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11net: filter: fix nlattr and nlattr_nest BPF testsAlexei Starovoitov1-13/+21
- 'struct nlattr' must be 2 byte aligned - provide big-endian input data for nlattr/nlattr_nest tests Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11net: filter: cleanup A/X name usageAlexei Starovoitov4-302/+314
The macro 'A' used in internal BPF interpreter: #define A regs[insn->a_reg] was easily confused with the name of classic BPF register 'A', since 'A' would mean two different things depending on context. This patch is trying to clean up the naming and clarify its usage in the following way: - A and X are names of two classic BPF registers - BPF_REG_A denotes internal BPF register R0 used to map classic register A in internal BPF programs generated from classic - BPF_REG_X denotes internal BPF register R7 used to map classic register X in internal BPF programs generated from classic - internal BPF instruction format: struct sock_filter_int { __u8 code; /* opcode */ __u8 dst_reg:4; /* dest register */ __u8 src_reg:4; /* source register */ __s16 off; /* signed offset */ __s32 imm; /* signed immediate constant */ }; - BPF_X/BPF_K is 1 bit used to encode source operand of instruction In classic: BPF_X - means use register X as source operand BPF_K - means use 32-bit immediate as source operand In internal: BPF_X - means use 'src_reg' register as source operand BPF_K - means use 32-bit immediate as source operand Suggested-by: Chema Gonzalez <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Acked-by: Chema Gonzalez <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11dns_resolver: assure that dns_query() result is null-terminatedManuel Schölling1-1/+3
dns_query() credulously assumes that keys are null-terminated and returns a copy of a memory block that is off by one. Signed-off-by: Manuel Schölling <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2014-06-11powerpc/powernv: Enable POWER8 doorbell IPIsMichael Neuling5-1/+18
This patch enables POWER8 doorbell IPIs on powernv. Since doorbells can only IPI within a core, we test to see when we can use doorbells and if not we fall back to XICS. This also enables hypervisor doorbells to wakeup us up from nap/sleep via the LPCR PECEDH bit. Based on tests by Anton, the best case IPI latency between two threads dropped from 894ns to 512ns. Signed-off-by: Michael Neuling <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/cpuidle: Only clear LPCR decrementer wakeup bit on fast sleep entryMichael Neuling1-5/+3
Currently when entering fastsleep we clear all LPCR PECE bits. This patch changes it to only clear the decrementer bit (ie. PECE1), which is the only bit we really need to clear here. This is needed if we want to set other wakeup causes like the PECEDH bit so we can use hypervisor doorbells on powernv. Also we no longer clear the MER bit as it should never be set in the host anyway. Signed-off-by: Michael Neuling <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/powernv: Fix killed EEH eventGavin Shan4-10/+19
On PowerNV platform, EEH errors are reported by IO accessors or poller driven by interrupt. After the PE is isolated, we won't produce EEH event for the PE. The current implementation has possibility of EEH event lost in this way: The interrupt handler queues one "special" event, which drives the poller. EEH thread doesn't pick the special event yet. IO accessors kicks in, the frozen PE is marked as "isolated" and EEH event is queued to the list. EEH thread runs because of special event and purge all existing EEH events. However, we never produce an other EEH event for the frozen PE. Eventually, the PE is marked as "isolated" and we don't have EEH event to recover it. The patch fixes the issue to keep EEH events for PEs that have been marked as "isolated" with the help of additional "force" help to eeh_remove_event(). Reported-by: Rolf Brudeseth <[email protected]> Signed-off-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc: fix typo 'CONFIG_PMAC'Paul Bolle1-1/+1
Commit b0d278b7d3ae ("powerpc/perf_event: Reduce latency of calling perf_event_do_pending") added a check for CONFIG_PMAC were a check for CONFIG_PPC_PMAC was clearly intended. Fixes: b0d278b7d3ae ("powerpc/perf_event: Reduce latency of calling perf_event_do_pending") Signed-off-by: Paul Bolle <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc: fix typo 'CONFIG_PPC_CPU'Paul Bolle1-1/+1
Commit cd64d1697cf0 ("powerpc: mtmsrd not defined") added a check for CONFIG_PPC_CPU were a check for CONFIG_PPC_FPU was clearly intended. Fixes: cd64d1697cf0 ("powerpc: mtmsrd not defined") Signed-off-by: Paul Bolle <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/powernv: Don't escalate non-existing frozen PEGavin Shan1-15/+9
Commit cb5b242c ("powerpc/eeh: Escalate error on non-existing PE") escalates the frozen state on non-existing PE to fenced PHB. It was to improve kdump reliability. After that, commit 361f2a2a ("powrpc/powernv: Reset PHB in kdump kernel") was introduced to issue complete reset on all PHBs to increase the reliability of kdump kernel. Commit cb5b242c becomes unuseful and it would be reverted. Signed-off-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/eeh: Report frozen parent PE prior to child PEGavin Shan2-5/+52
When we have the corner case of frozen parent and child PE at the same time, we have to handle the frozen parent PE prior to the child. Without clearning the frozen state on parent PE, the child PE can't be recovered successfully. The patch searches the EEH PE hierarchy tree and returns the toppest frozen PE to be handled. It ensures the frozen parent PE will be handled prior to child PE. Signed-off-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/eeh: Clear frozen state for child PEGavin Shan1-4/+16
Since commit cb523e09 ("powerpc/eeh: Avoid I/O access during PE reset"), the PE is kept as frozen state on hardware level until the PE reset is done completely. After that, we explicitly clear the frozen state of the affected PE. However, there might have frozen child PEs of the affected PE and we also need clear their frozen state as well. Otherwise, the recovery is going to fail. Signed-off-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/powernv: Reduce panic timeout from 180s to 10sAnton Blanchard1-0/+2
We've already dropped the default pseries timeout to 10s, do the same for powernv. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/xmon: avoid format string leaking to printkKees Cook1-1/+1
This makes sure format strings cannot leak into printk (the string has already been correctly processed for format arguments). Signed-off-by: Kees Cook <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11selftests/powerpc: Add tests of PMU EBBsMichael Ellerman34-4/+3913
The Power8 Performance Monitor Unit (PMU) has a new feature called Event Based Branches (EBB). This commit adds tests of the kernel API for using EBBs. Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11selftests/powerpc: Add support for skipping testsMichael Ellerman3-1/+21
Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11selftests/powerpc: Put the test in a separate process groupMichael Ellerman1-2/+8
Allows us to kill the test and any children it has spawned. Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11selftests/powerpc: Fix instruction loop for ABIv2 (LE)Michael Ellerman1-38/+35
Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/perf: Ensure all EBB register state is cleared on fork()Michael Ellerman1-0/+2
In commit 330a1eb "Core EBB support for 64-bit book3s" I messed up clear_task_ebb(). It clears some but not all of the task's Event Based Branch (EBB) registers when we duplicate a task struct. That allows a child task to observe the EBBHR & EBBRR of its parent, which it should not be able to do. Fix it by clearing EBBHR & EBBRR. Signed-off-by: Michael Ellerman <[email protected]> Cc: [email protected] [v3.11+] Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/powernv: Fix reading of OPAL msglogJoel Stanley1-1/+5
memory_return_from_buffer returns a signed value, so ret should be ssize_t. Fixes the following issue reported by David Binderman: [linux-3.15/arch/powerpc/platforms/powernv/opal-msglog.c:65]: (style) Checking if unsigned variable 'ret' is less than zero. [linux-3.15/arch/powerpc/platforms/powernv/opal-msglog.c:82]: (style) Checking if unsigned variable 'ret' is less than zero. Local variable "ret" is of type size_t. This is always unsigned, so it is pointless to check if it is less than zero. https://bugzilla.kernel.org/show_bug.cgi?id=77551 Fixing this exposes a real bug for the case where the entire count bytes is successfully read from the POS_WRAP case. The second memory_read_from_buffer will return EINVAL, causing the entire read to return EINVAL to userspace, despite the data being copied correctly. The fix is to test for the case where the data has been read and return early. Signed-off-by: Joel Stanley <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/spufs: Remove duplicate SPUFS_CNTL_MAP_SIZE defineDan Carpenter1-1/+0
The SPUFS_CNTL_MAP_SIZE define is cut and pasted twice so we can delete the second instance. Signed-off-by: Dan Carpenter <[email protected]> Acked-by: Jeremy Kerr <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/cpm: Remove duplicate FCC_GFMR_TTX defineDan Carpenter1-1/+0
The FCC_GFMR_TTX define is cut and pasted twice so we can remove the second instance. Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/powernv: Fix endianness problems in EEHGuo Chao3-99/+120
EEH information fetched from OPAL need fix before using in LE environment. To be included in sparse's endian check, declare them as __beXX and access them by accessors. Cc: Gavin Shan <[email protected]> Signed-off-by: Guo Chao <[email protected]> Acked-by: Gavin Shan <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11crypto/nx: disable NX on little endian buildsAnton Blanchard1-1/+1
The NX driver has endian issues so disable it for now. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powernv: Fix permissions on sysparam sysfs entriesAnton Blanchard1-2/+2
Everyone can write to these files, which is not what we want. Cc: [email protected] # 3.15 Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/powernv : Disable subcore for UP configsShreyas B. Prabhu1-2/+2
Build throws following errors when CONFIG_SMP=n arch/powerpc/platforms/powernv/subcore.c: In function ‘cpu_update_split_mode’: arch/powerpc/platforms/powernv/subcore.c:274:15: error: ‘setup_max_cpus’ undeclared (first use in this function) arch/powerpc/platforms/powernv/subcore.c:285:5: error: lvalue required as left operand of assignment 'setup_max_cpus' variable is relevant only on SMP, so there is no point working around it for UP. Furthermore, subcore itself is relevant only on SMP and hence the better solution is to exclude subcore.o and subcore-asm.o for UP builds. Signed-off-by: Shreyas B. Prabhu <[email protected]> Reviewed-by: Srivatsa S. Bhat <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc/powernv: Include asm/smp.h to fix UP build failureShreyas B. Prabhu1-0/+1
Build throws following errors when CONFIG_SMP=n arch/powerpc/platforms/powernv/setup.c: In function ‘pnv_kexec_wait_secondaries_down’: arch/powerpc/platforms/powernv/setup.c:179:4: error: implicit declaration of function ‘get_hard_smp_processor_id’ rc = opal_query_cpu_status(get_hard_smp_processor_id(i), The usage of get_hard_smp_processor_id() needs the declaration from <asm/smp.h>. The file setup.c includes <linux/sched.h>, which in-turn includes <linux/smp.h>. However, <linux/smp.h> includes <asm/smp.h> only on SMP configs and hence UP builds fail. Fix this by directly including <asm/smp.h> in setup.c unconditionally. Reported-by: Geert Uytterhoeven <[email protected]> Reviewed-by: Srivatsa S. Bhat <[email protected]> Signed-off-by: Shreyas B. Prabhu <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc: Don't setup CPUs with bad statusMichael Neuling1-1/+1
OPAL will mark a CPU that is guarded as "bad" in the status property of the CPU node. Unfortunatley Linux doesn't check this property and will put the bad CPU in the present map. This has caused hangs on booting when we try to unsplit the core. This patch checks the CPU is avaliable via this status property before putting it in the present map. Signed-off-by: Michael Neuling <[email protected]> Tested-by: Anton Blanchard <[email protected]> cc: [email protected] Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2014-06-11powerpc: Correct DSCR during TM context switchSam bobroff6-13/+114
Correct the DSCR SPR becoming temporarily corrupted if a task is context switched during a transaction. The problem occurs while suspending the task and is caused by saving the DSCR to thread.dscr after it has already been set to the CPU's default value: __switch_to() calls __switch_to_tm() which calls tm_reclaim_task() which calls tm_reclaim_thread() which calls tm_reclaim() where the DSCR is set to the CPU's default __switch_to() calls _switch() where thread.dscr is set to the DSCR When the task is resumed, it's transaction will be doomed (as usual) and the DSCR SPR will be corrupted, although the checkpointed value will be correct. Therefore the DSCR will be immediately corrected by the transaction aborting, unless it has been suspended. In that case the incorrect value can be seen by the task until it resumes the transaction. The fix is to treat the DSCR similarly to the TAR and save it early in __switch_to(). A program exposing the problem is added to the kernel self tests as: tools/testing/selftests/powerpc/tm/tm-resched-dscr. Signed-off-by: Sam Bobroff <[email protected]> CC: <[email protected]> [v3.10+] Signed-off-by: Benjamin Herrenschmidt <[email protected]>
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