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Enable MMC to support SDIO pass-through on virtual platform.
Change-Id: I808510d6d30ea780f3936c4eba98bb6e3e637050
Signed-off-by: Zhiqiang Tu <ztu@codeaurora.org>
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Currently same pipe index is used for both QDSS and DPL pipes for SDM660.
This causes QDSS not working in composition 90DB having both QDSS and DPL
interfaces. Hence fix it by changing QDSS pipe index to 3 so that both
QDSS and DPL works fine with 90DB composition on SDM660.
Change-Id: I7c799716cff7321985fcb88a8073737343a932f5
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
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Virtual plane limited the usage of plane on assigned display only.
It is against the implementation in strategy manager in SDM, which
assume any plane can be used by any display.
Change-Id: Iddcb94d888dfa1ec7685f2964116b4296a0e9a7f
Signed-off-by: Camus Wong <camusw@codeaurora.org>
Signed-off-by: Rahul Sharma <sharah@codeaurora.org>
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cam_snapshot and cam_focus GPIO pins are unused on Mojave,
thus remove them from DT. Those pins are used for ADV7481
on Mojave.
Change-Id: I8c0026a215fdc2cf1aa94eb763f82258229435c8
Suggested-by: Resmi Rajendran <resmir@qti.qualcomm.com>
Signed-off-by: Rahul Sharma <sharah@codeaurora.org>
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This enables sdcardfs for sdm660.
Change-Id: I5621743809caf9a3bbe1deda38681b9c9bcccb99
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
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SDM636 inherits all SDM660 GPU properties, but it will support
GPU max frequency 430Mhz and DDR max frequency 1353Mhz.
Change-Id: I7f88e5d187df2880757ceb6676e75f3cfe5d9218
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>
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This patch enables sdcardfs for msmcortex.
Change-Id: Icf3105c0080a35c2ead663decf4340647ac64b67
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
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sdm660"
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Add base register property in respective pil nodes to iomap them
during probe of the subsystem pil driver.
Change-Id: I961ab80f1caf84ab63d649c3a1545b89fed56c0b
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>
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This change disables FB driver and enable DRM display driver
on msm8996 auto defconfig.
Change-Id: Ic214b70dd47379464220e4f801c2ab38753c9a10
Signed-off-by: Rahul Sharma <sharah@codeaurora.org>
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DFS support is disabled for ath10k driver.
Enable the DFS support for ath10k in the defconfig and perf defconfig.
CRs-Fixed: 2124757
Change-Id: Iccecd2226fd13034b12a8978b68f9535178ed430
Signed-off-by: Surabhi Vishnoi <svishnoi@codeaurora.org>
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* refs/heads/tmp-89074de
Linux 4.4.94
Revert "tty: goldfish: Fix a parameter of a call to free_irq"
cpufreq: CPPC: add ACPI_PROCESSOR dependency
nfsd/callback: Cleanup callback cred on shutdown
target/iscsi: Fix unsolicited data seq_end_offset calculation
uapi: fix linux/mroute6.h userspace compilation errors
uapi: fix linux/rds.h userspace compilation errors
ceph: clean up unsafe d_parent accesses in build_dentry_path
i2c: at91: ensure state is restored after suspending
net: mvpp2: release reference to txq_cpu[] entry after unmapping
scsi: scsi_dh_emc: return success in clariion_std_inquiry()
slub: do not merge cache if slub_debug contains a never-merge flag
ocfs2/dlmglue: prepare tracking logic to avoid recursive cluster lock
crypto: xts - Add ECB dependency
net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs
sparc64: Migrate hvcons irq to panicked cpu
md/linear: shutup lockdep warnning
f2fs: do not wait for writeback in write_begin
Btrfs: send, fix failure to rename top level inode due to name collision
iio: adc: xilinx: Fix error handling
netfilter: nf_ct_expect: Change __nf_ct_expect_check() return value.
net/mlx4_en: fix overflow in mlx4_en_init_timestamp()
mac80211: fix power saving clients handling in iwlwifi
mac80211_hwsim: check HWSIM_ATTR_RADIO_NAME length
irqchip/crossbar: Fix incorrect type of local variables
watchdog: kempld: fix gcc-4.3 build
locking/lockdep: Add nest_lock integrity test
Revert "bsg-lib: don't free job in bsg_prepare_job"
tipc: use only positive error codes in messages
net: Set sk_prot_creator when cloning sockets to the right proto
packet: only test po->has_vnet_hdr once in packet_snd
packet: in packet_do_bind, test fanout with bind_lock held
tun: bail out from tun_get_user() if the skb is empty
l2tp: fix race condition in l2tp_tunnel_delete
l2tp: Avoid schedule while atomic in exit_net
vti: fix use after free in vti_tunnel_xmit/vti6_tnl_xmit
isdn/i4l: fetch the ppp_write buffer in one shot
bpf: one perf event close won't free bpf program attached by another perf event
packet: hold bind lock when rebinding to fanout hook
net: emac: Fix napi poll list corruption
ip6_gre: skb_push ipv6hdr before packing the header in ip6gre_header
udpv6: Fix the checksum computation when HW checksum does not apply
bpf/verifier: reject BPF_ALU64|BPF_END
sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
MIPS: Fix minimum alignment requirement of IRQ stack
drm/dp/mst: save vcpi with payloads
percpu: make this_cpu_generic_read() atomic w.r.t. interrupts
trace: sched: Fix util_avg_walt in sched_load_avg_cpu trace
sched/fair: remove erroneous RCU_LOCKDEP_WARN from start_cpu()
sched: EAS/WALT: finish accounting prior to task_tick
cpufreq: sched: update capacity request upon tick always
sched/fair: prevent meaningless active migration
sched: walt: Leverage existing helper APIs to apply invariance
Conflicts:
kernel/sched/core.c
kernel/sched/fair.c
kernel/sched/sched.h
Change-Id: I0effac90fb6a4db559479bfa2fefa31c41200ce9
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
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Changes in 4.4.94
percpu: make this_cpu_generic_read() atomic w.r.t. interrupts
drm/dp/mst: save vcpi with payloads
MIPS: Fix minimum alignment requirement of IRQ stack
sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
bpf/verifier: reject BPF_ALU64|BPF_END
udpv6: Fix the checksum computation when HW checksum does not apply
ip6_gre: skb_push ipv6hdr before packing the header in ip6gre_header
net: emac: Fix napi poll list corruption
packet: hold bind lock when rebinding to fanout hook
bpf: one perf event close won't free bpf program attached by another perf event
isdn/i4l: fetch the ppp_write buffer in one shot
vti: fix use after free in vti_tunnel_xmit/vti6_tnl_xmit
l2tp: Avoid schedule while atomic in exit_net
l2tp: fix race condition in l2tp_tunnel_delete
tun: bail out from tun_get_user() if the skb is empty
packet: in packet_do_bind, test fanout with bind_lock held
packet: only test po->has_vnet_hdr once in packet_snd
net: Set sk_prot_creator when cloning sockets to the right proto
tipc: use only positive error codes in messages
Revert "bsg-lib: don't free job in bsg_prepare_job"
locking/lockdep: Add nest_lock integrity test
watchdog: kempld: fix gcc-4.3 build
irqchip/crossbar: Fix incorrect type of local variables
mac80211_hwsim: check HWSIM_ATTR_RADIO_NAME length
mac80211: fix power saving clients handling in iwlwifi
net/mlx4_en: fix overflow in mlx4_en_init_timestamp()
netfilter: nf_ct_expect: Change __nf_ct_expect_check() return value.
iio: adc: xilinx: Fix error handling
Btrfs: send, fix failure to rename top level inode due to name collision
f2fs: do not wait for writeback in write_begin
md/linear: shutup lockdep warnning
sparc64: Migrate hvcons irq to panicked cpu
net/mlx4_core: Fix VF overwrite of module param which disables DMFS on new probed PFs
crypto: xts - Add ECB dependency
ocfs2/dlmglue: prepare tracking logic to avoid recursive cluster lock
slub: do not merge cache if slub_debug contains a never-merge flag
scsi: scsi_dh_emc: return success in clariion_std_inquiry()
net: mvpp2: release reference to txq_cpu[] entry after unmapping
i2c: at91: ensure state is restored after suspending
ceph: clean up unsafe d_parent accesses in build_dentry_path
uapi: fix linux/rds.h userspace compilation errors
uapi: fix linux/mroute6.h userspace compilation errors
target/iscsi: Fix unsolicited data seq_end_offset calculation
nfsd/callback: Cleanup callback cred on shutdown
cpufreq: CPPC: add ACPI_PROCESSOR dependency
Revert "tty: goldfish: Fix a parameter of a call to free_irq"
Linux 4.4.94
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit 7dd4fcf5b70694dc961eb6b954673e4fc9730dbd ]
On panic, all other CPUs are stopped except the one which had
hit panic. To keep console alive, we need to migrate hvcons irq
to panicked CPU.
Signed-off-by: Vijay Kumar <vijay.ac.kumar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5fdc66e046206306bf61ff2d626bfa52ca087f7b upstream.
Commit db8466c581cc ("MIPS: IRQ Stack: Unwind IRQ stack onto task
stack") erroneously set the initial stack pointer of the IRQ stack to a
value with a 4 byte alignment. The MIPS32 ABI requires that the minimum
stack alignment is 8 byte, and the MIPS64 ABIs(n32/n64) require 16 byte
minimum alignment. Fix IRQ_STACK_START such that it leaves space for the
dummy stack frame (containing interrupted task kernel stack pointer)
while also meeting minimum alignment requirements.
Fixes: db8466c581cc ("MIPS: IRQ Stack: Unwind IRQ stack onto task stack")
Reported-by: Darius Ivanauskas <dasilt@yahoo.com>
Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Jason A. Donenfeld <jason@zx2c4.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/16760/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Apq8096 lite board has one DSI-HDMI display through adv7533 bridge chip,
so enable this bridge chip node.
Change-Id: I3539889b70b5a14d6acd09d13e387bdce11d59b1
CRs-Fixed: 2113147
Signed-off-by: Guchun Chen <guchunc@codeaurora.org>
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By default sparse uses the characteristics of the build
machine to infer things like the wordsize.
This is fine when doing native builds but for ARM it's,
I suspect, very rarely the case and if the build are done
on a 64bit machine we get a bunch of warnings like:
'cast truncates bits from constant value (... becomes ...)'
Fix this by adding the -m32 flags for sparse.
Change-Id: I9045e5b77578d03e328a4a6af297e84356c02cf8
Reported-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Git-commit: 6042b8c7c08cad7a8bdc0456c619ae941962b40a
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
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Refactor device tree to support multiple targets on virtual platform.
Change-Id: Id4a3519afd63b77510d824979fc71309ff6ac481
Signed-off-by: Zhiqiang Tu <ztu@codeaurora.org>
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Add configuration for 64-bit FSM platforms.
Change-Id: Icd5fb7875674e537a102af3fbc7d7c8b90c59740
CRs-Fixed: 2125734
Acked-by: Jennifer L Zenner <jzenner@qti.qualcomm.com>
Signed-off-by: Yasir Malik <ymalik@codeaurora.org>
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* refs/heads/tmp-d6fbbe5
Linux 4.4.93
x86/alternatives: Fix alt_max_short macro to really be a max()
USB: serial: console: fix use-after-free after failed setup
USB: serial: qcserial: add Dell DW5818, DW5819
USB: serial: option: add support for TP-Link LTE module
USB: serial: cp210x: add support for ELV TFD500
USB: serial: ftdi_sio: add id for Cypress WICED dev board
fix unbalanced page refcounting in bio_map_user_iov
direct-io: Prevent NULL pointer access in submit_page_section
usb: gadget: composite: Fix use-after-free in usb_composite_overwrite_options
ALSA: line6: Fix leftover URB at error-path during probe
ALSA: caiaq: Fix stray URB at probe error path
ALSA: seq: Fix copy_from_user() call inside lock
ALSA: seq: Fix use-after-free at creating a port
ALSA: usb-audio: Kill stray URB at exiting
iommu/amd: Finish TLB flush in amd_iommu_unmap()
usb: renesas_usbhs: Fix DMAC sequence for receiving zero-length packet
KVM: nVMX: fix guest CR4 loading when emulating L2 to L1 exit
crypto: shash - Fix zero-length shash ahash digest crash
HID: usbhid: fix out-of-bounds bug
dmaengine: edma: Align the memcpy acnt array size with the transfer
MIPS: math-emu: Remove pr_err() calls from fpu_emu()
USB: dummy-hcd: Fix deadlock caused by disconnect detection
rcu: Allow for page faults in NMI handlers
iwlwifi: mvm: use IWL_HCMD_NOCOPY for MCAST_FILTER_CMD
nl80211: Define policy for packet pattern attributes
CIFS: Reconnect expired SMB sessions
ext4: in ext4_seek_{hole,data}, return -ENXIO for negative offsets
brcmfmac: add length check in brcmf_cfg80211_escan_handler()
ANDROID: HACK: arm64: use -mno-implicit-float instead of -mgeneral-regs-only
sched: Update task->on_rq when tasks are moving between runqueues
FROMLIST: f2fs: expose some sectors to user in inline data or dentry case
crypto: Work around deallocated stack frame reference gcc bug on sparc.
UPSTREAM: f2fs: fix potential panic during fstrim
ANDROID: fscrypt: remove unnecessary fscrypto.h
ANDROID: binder: fix node sched policy calculation
ANDROID: Kbuild, LLVMLinux: allow overriding clang target triple
CHROMIUM: arm64: Disable asm-operand-width warning for clang
CHROMIUM: kbuild: clang: Disable the 'duplicate-decl-specifier' warning
UPSTREAM: x86/build: Use cc-option to validate stack alignment parameter
UPSTREAM: x86/build: Fix stack alignment for CLang
UPSTREAM: efi/libstub/arm64: Set -fpie when building the EFI stub
BACKPORT: efi/libstub/arm64: Force 'hidden' visibility for section markers
UPSTREAM: compiler, clang: always inline when CONFIG_OPTIMIZE_INLINING is disabled
UPSTREAM: x86/boot: #undef memcpy() et al in string.c
UPSTREAM: crypto: arm64/sha - avoid non-standard inline asm tricks
UPSTREAM: kbuild: clang: Disable 'address-of-packed-member' warning
UPSTREAM: x86/build: Specify stack alignment for clang
UPSTREAM: x86/build: Use __cc-option for boot code compiler options
BACKPORT: kbuild: Add __cc-option macro
UPSTREAM: x86/hweight: Don't clobber %rdi
BACKPORT: x86/hweight: Get rid of the special calling convention
BACKPORT: x86/mm/kaslr: Use the _ASM_MUL macro for multiplication to work around Clang incompatibility
UPSTREAM: crypto, x86: aesni - fix token pasting for clang
UPSTREAM: x86/kbuild: Use cc-option to enable -falign-{jumps/loops}
UPSTREAM: compiler, clang: properly override 'inline' for clang
UPSTREAM: compiler, clang: suppress warning for unused static inline functions
UPSTREAM: Kbuild: provide a __UNIQUE_ID for clang
UPSTREAM: modules: mark __inittest/__exittest as __maybe_unused
BACKPORT: kbuild: Add support to generate LLVM assembly files
UPSTREAM: kbuild: use -Oz instead of -Os when using clang
BACKPORT: kbuild, LLVMLinux: Add -Werror to cc-option to support clang
UPSTREAM: kbuild: drop -Wno-unknown-warning-option from clang options
UPSTREAM: kbuild: fix asm-offset generation to work with clang
UPSTREAM: kbuild: consolidate redundant sed script ASM offset generation
UPSTREAM: kbuild: Consolidate header generation from ASM offset information
UPSTREAM: kbuild: clang: add -no-integrated-as to KBUILD_[AC]FLAGS
UPSTREAM: kbuild: Add better clang cross build support
Conflicts:
arch/x86/lib/Makefile
net/wireless/nl80211.c
Change-Id: I76032e8d1206903bc948b9ed918e7ddee7e746c7
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
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Changes in 4.4.93
brcmfmac: add length check in brcmf_cfg80211_escan_handler()
ext4: in ext4_seek_{hole,data}, return -ENXIO for negative offsets
CIFS: Reconnect expired SMB sessions
nl80211: Define policy for packet pattern attributes
iwlwifi: mvm: use IWL_HCMD_NOCOPY for MCAST_FILTER_CMD
rcu: Allow for page faults in NMI handlers
USB: dummy-hcd: Fix deadlock caused by disconnect detection
MIPS: math-emu: Remove pr_err() calls from fpu_emu()
dmaengine: edma: Align the memcpy acnt array size with the transfer
HID: usbhid: fix out-of-bounds bug
crypto: shash - Fix zero-length shash ahash digest crash
KVM: nVMX: fix guest CR4 loading when emulating L2 to L1 exit
usb: renesas_usbhs: Fix DMAC sequence for receiving zero-length packet
iommu/amd: Finish TLB flush in amd_iommu_unmap()
ALSA: usb-audio: Kill stray URB at exiting
ALSA: seq: Fix use-after-free at creating a port
ALSA: seq: Fix copy_from_user() call inside lock
ALSA: caiaq: Fix stray URB at probe error path
ALSA: line6: Fix leftover URB at error-path during probe
usb: gadget: composite: Fix use-after-free in usb_composite_overwrite_options
direct-io: Prevent NULL pointer access in submit_page_section
fix unbalanced page refcounting in bio_map_user_iov
USB: serial: ftdi_sio: add id for Cypress WICED dev board
USB: serial: cp210x: add support for ELV TFD500
USB: serial: option: add support for TP-Link LTE module
USB: serial: qcserial: add Dell DW5818, DW5819
USB: serial: console: fix use-after-free after failed setup
x86/alternatives: Fix alt_max_short macro to really be a max()
Linux 4.4.93
Change-Id: I731bf1eef5aca9728dddd23bfbe407f0c6ff2d84
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
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commit 6b32c126d33d5cb379bca280ab8acedc1ca978ff upstream.
The alt_max_short() macro in asm/alternative.h does not work as
intended, leading to nasty bugs. E.g. alt_max_short("1", "3")
evaluates to 3, but alt_max_short("3", "1") evaluates to 1 -- not
exactly the maximum of 1 and 3.
In fact, I had to learn it the hard way by crashing my kernel in not
so funny ways by attempting to make use of the ALTENATIVE_2 macro
with alternatives where the first one was larger than the second
one.
According to [1] and commit dbe4058a6a44 ("x86/alternatives: Fix
ALTERNATIVE_2 padding generation properly") the right handed side
should read "-(-(a < b))" not "-(-(a - b))". Fix that, to make the
macro work as intended.
While at it, fix up the comments regarding the additional "-", too.
It's not about gas' usage of s32 but brain dead logic of having a
"true" value of -1 for the < operator ... *sigh*
Btw., the one in asm/alternative-asm.h is correct. And, apparently,
all current users of ALTERNATIVE_2() pass same sized alternatives,
avoiding to hit the bug.
[1] http://graphics.stanford.edu/~seander/bithacks.html#IntegerMinOrMax
Reviewed-and-tested-by: Borislav Petkov <bp@suse.de>
Fixes: dbe4058a6a44 ("x86/alternatives: Fix ALTERNATIVE_2 padding generation properly")
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/1507228213-13095-1-git-send-email-minipli@googlemail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8eb3f87d903168bdbd1222776a6b1e281f50513e upstream.
When KVM emulates an exit from L2 to L1, it loads L1 CR4 into the
guest CR4. Before this CR4 loading, the guest CR4 refers to L2
CR4. Because these two CR4's are in different levels of guest, we
should vmx_set_cr4() rather than kvm_set_cr4() here. The latter, which
is used to handle guest writes to its CR4, checks the guest change to
CR4 and may fail if the change is invalid.
The failure may cause trouble. Consider we start
a L1 guest with non-zero L1 PCID in use,
(i.e. L1 CR4.PCIDE == 1 && L1 CR3.PCID != 0)
and
a L2 guest with L2 PCID disabled,
(i.e. L2 CR4.PCIDE == 0)
and following events may happen:
1. If kvm_set_cr4() is used in load_vmcs12_host_state() to load L1 CR4
into guest CR4 (in VMCS01) for L2 to L1 exit, it will fail because
of PCID check. As a result, the guest CR4 recorded in L0 KVM (i.e.
vcpu->arch.cr4) is left to the value of L2 CR4.
2. Later, if L1 attempts to change its CR4, e.g., clearing VMXE bit,
kvm_set_cr4() in L0 KVM will think L1 also wants to enable PCID,
because the wrong L2 CR4 is used by L0 KVM as L1 CR4. As L1
CR3.PCID != 0, L0 KVM will inject GP to L1 guest.
Fixes: 4704d0befb072 ("KVM: nVMX: Exiting from L2 to L1")
Cc: qemu-stable@nongnu.org
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ca8eb05b5f332a9e1ab3e2ece498d49f4d683470 upstream.
The FPU emulator includes 2 calls to pr_err() which are triggered by
invalid instruction encodings for MIPSr6 cmp.cond.fmt instructions.
These cases are not kernel errors, merely invalid instructions which are
already handled by delivering a SIGILL which will provide notification
that something failed in cases where that makes sense.
In cases where that SIGILL is somewhat expected & being handled, for
example when crashme happens to generate one of the affected bad
encodings, the message is printed with no useful context about what
triggered it & spams the kernel log for no good reason.
Remove the pr_err() calls to make crashme run silently & treat the bad
encodings the same way we do others, with a SIGILL & no further kernel
log output.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: f8c3c6717a71 ("MIPS: math-emu: Add support for the CMP.condn.fmt R6 instruction")
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17253/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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LLVM bug 30792 causes clang's AArch64 backend to crash compiling
arch/arm64/crypto/aes-ce-cipher.c. Replacing -mgeneral-regs-only with
-mno-implicit-float is the suggested workaround.
Drop this patch once the clang bug has been fixed.
Change-Id: I7c7bb9315a281970698120a6d2a9fcd126aad65e
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
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clang raises 'asm-operand-widths' warnings in inline assembly code when
the size of an operand is < 64 bits and the operand width is unspecified.
Most warnings are raised in macros, i.e. the datatype of the operand may
vary. Most of these warnings are fixed in upstream, however we consider it
isn't worth the effort/risk to backport all the necessary changes. On
future CrOS kernels >= v4.13 the warning should be re-enabled.
Change-Id: Ia331bc83d44b8c1499450aefb45c576cd29ebf55
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Greg Hackmann <ghackmann@google.com>
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With the following commit:
8f91869766c0 ("x86/build: Fix stack alignment for CLang")
cc-option is only used to determine the name of the stack alignment option
supported by the compiler, but not to verify that the actual parameter
<option>=N is valid in combination with the other CFLAGS.
This causes problems (as reported by the kbuild robot) with older GCC versions
which only support stack alignment on a boundary of 16 bytes or higher.
Also use (__)cc_option to add the stack alignment option to CFLAGS to
make sure only valid options are added.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Bernhard.Rosenkranzer@linaro.org
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michael Davidson <md@google.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Hines <srhines@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dianders@chromium.org
Fixes: 8f91869766c0 ("x86/build: Fix stack alignment for CLang")
Link: http://lkml.kernel.org/r/20170817182047.176752-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 9e8730b178a2472fca3123e909d6e69cc8127778)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: Ia2c932ede0096fe399131e958e0aaf4835039294
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Commit:
d77698df39a5 ("x86/build: Specify stack alignment for clang")
intended to use the same stack alignment for clang as with gcc.
The two compilers use different options to configure the stack alignment
(gcc: -mpreferred-stack-boundary=n, clang: -mstack-alignment=n).
The above commit assumes that the clang option uses the same parameter
type as gcc, i.e. that the alignment is specified as 2^n. However clang
interprets the value of this option literally to use an alignment of n,
in consequence the stack remains misaligned.
Change the values used with -mstack-alignment to be the actual alignment
instead of a power of two.
cc-option isn't used here with the typical pattern of KBUILD_CFLAGS +=
$(call cc-option ...). The reason is that older gcc versions don't
support the -mpreferred-stack-boundary option, since cc-option doesn't
verify whether the alternative option is valid it would incorrectly
select the clang option -mstack-alignment..
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Bernhard.Rosenkranzer@linaro.org
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michael Davidson <md@google.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Hines <srhines@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dianders@chromium.org
Link: http://lkml.kernel.org/r/20170817004740.170588-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 8f91869766c00622b2eaa8ee567db4f333b78c1a)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: I7991bfed754f5ac10ac8b383c20ec89d56b2afc0
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undef memcpy() and friends in boot/string.c so that the functions
defined here will have the correct names, otherwise we end up
up trying to redefine __builtin_memcpy() etc.
Surprisingly, GCC allows this (and, helpfully, discards the
__builtin_ prefix from the function name when compiling it),
but clang does not.
Adding these #undef's appears to preserve what I assume was
the original intent of the code.
(cherry picked from commit 18d5e6c34a8eda438d5ad8b3b15f42dab01bf05d)
Change-Id: I616a6a8ece533166367d987597e8c405c96441a2
Signed-off-by: Michael Davidson <md@google.com>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Bernhard.Rosenkranzer@linaro.org
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170724235155.79255-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Hackmann <ghackmann@google.com>
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Replace the inline asm which exports struct offsets as ELF symbols
with proper const variables exposing the same values. This works
around an issue with Clang which does not interpret the "i" (or "I")
constraints in the same way as GCC.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit f4857f4c2ee9aa4e2aacac1a845352b00197fb57)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: I1f882de15bd447d6fc41858dfc0cbfd3f6e2466c
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For gcc stack alignment is configured with -mpreferred-stack-boundary=N,
clang has the option -mstack-alignment=N for that purpose. Use the same
alignment as with gcc.
If the alignment is not specified clang assumes an alignment of
16 bytes, as required by the standard ABI. However as mentioned in
d9b0cde91c60 ("x86-64, gcc: Use -mpreferred-stack-boundary=3 if
supported") the standard kernel entry on x86-64 leaves the stack
on an 8-byte boundary, as a consequence clang will keep the stack
misaligned.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
(cherry picked commit d77698df39a512911586834d303275ea5fda74d0)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: I4283d10c6fe31cf194b35adc5371732b89eb3ae3
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cc-option is used to enable compiler options for the boot code if they
are available. The macro uses KBUILD_CFLAGS and KBUILD_CPPFLAGS for the
check, however these flags aren't used to build the boot code, in
consequence cc-option can yield wrong results. For example
-mpreferred-stack-boundary=2 is never set with a 64-bit compiler,
since the setting is only valid for 16 and 32-bit binaries. This
is also the case for 32-bit kernel builds, because the option -m32 is
added to KBUILD_CFLAGS after the assignment of REALMODE_CFLAGS.
Use __cc-option instead of cc-option for the boot mode options.
The macro receives the compiler options as parameter instead of using
KBUILD_C*FLAGS, for the boot code we pass REALMODE_CFLAGS.
Also use separate statements for the __cc-option checks instead
of performing them in the initial assignment of REALMODE_CFLAGS since
the variable is an input of the macro.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
(cherry picked commit 032a2c4f65a2f81c93e161a11197ba19bc14a909)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: I7756f875771edb00238eb770be912f713407681a
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The caller expects %rdi to remain intact, push+pop it make that happen.
Fixes the following kind of explosions on my core2duo machine when
trying to reboot or shut down:
general protection fault: 0000 [#1] PREEMPT SMP
Modules linked in: i915 i2c_algo_bit drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm netconsole configfs binfmt_misc iTCO_wdt psmouse pcspkr snd_hda_codec_idt e100 coretemp hwmon snd_hda_codec_generic i2c_i801 mii i2c_smbus lpc_ich mfd_core snd_hda_intel uhci_hcd snd_hda_codec snd_hwdep snd_hda_core ehci_pci 8250 ehci_hcd snd_pcm 8250_base usbcore evdev serial_core usb_common parport_pc parport snd_timer snd soundcore
CPU: 0 PID: 3070 Comm: reboot Not tainted 4.8.0-rc1-perf-dirty #69
Hardware name: /D946GZIS, BIOS TS94610J.86A.0087.2007.1107.1049 11/07/2007
task: ffff88012a0b4080 task.stack: ffff880123850000
RIP: 0010:[<ffffffff81003c92>] [<ffffffff81003c92>] x86_perf_event_update+0x52/0xc0
RSP: 0018:ffff880123853b60 EFLAGS: 00010087
RAX: 0000000000000001 RBX: ffff88012fc0a3c0 RCX: 000000000000001e
RDX: 0000000000000000 RSI: 0000000040000000 RDI: ffff88012b014800
RBP: ffff880123853b88 R08: ffffffffffffffff R09: 0000000000000000
R10: ffffea0004a012c0 R11: ffffea0004acedc0 R12: ffffffff80000001
R13: ffff88012b0149c0 R14: ffff88012b014800 R15: 0000000000000018
FS: 00007f8b155cd700(0000) GS:ffff88012fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8b155f5000 CR3: 000000012a2d7000 CR4: 00000000000006f0
Stack:
ffff88012fc0a3c0 ffff88012b014800 0000000000000004 0000000000000001
ffff88012fc1b750 ffff880123853bb0 ffffffff81003d59 ffff88012b014800
ffff88012fc0a3c0 ffff88012b014800 ffff880123853bd8 ffffffff81003e13
Call Trace:
[<ffffffff81003d59>] x86_pmu_stop+0x59/0xd0
[<ffffffff81003e13>] x86_pmu_del+0x43/0x140
[<ffffffff8111705d>] event_sched_out.isra.105+0xbd/0x260
[<ffffffff8111738d>] __perf_remove_from_context+0x2d/0xb0
[<ffffffff8111745d>] __perf_event_exit_context+0x4d/0x70
[<ffffffff810c8826>] generic_exec_single+0xb6/0x140
[<ffffffff81117410>] ? __perf_remove_from_context+0xb0/0xb0
[<ffffffff81117410>] ? __perf_remove_from_context+0xb0/0xb0
[<ffffffff810c898f>] smp_call_function_single+0xdf/0x140
[<ffffffff81113d27>] perf_event_exit_cpu_context+0x87/0xc0
[<ffffffff81113d73>] perf_reboot+0x13/0x40
[<ffffffff8107578a>] notifier_call_chain+0x4a/0x70
[<ffffffff81075ad7>] __blocking_notifier_call_chain+0x47/0x60
[<ffffffff81075b06>] blocking_notifier_call_chain+0x16/0x20
[<ffffffff81076a1d>] kernel_restart_prepare+0x1d/0x40
[<ffffffff81076ae2>] kernel_restart+0x12/0x60
[<ffffffff81076d56>] SYSC_reboot+0xf6/0x1b0
[<ffffffff811a823c>] ? mntput_no_expire+0x2c/0x1b0
[<ffffffff811a83e4>] ? mntput+0x24/0x40
[<ffffffff811894fc>] ? __fput+0x16c/0x1e0
[<ffffffff811895ae>] ? ____fput+0xe/0x10
[<ffffffff81072fc3>] ? task_work_run+0x83/0xa0
[<ffffffff81001623>] ? exit_to_usermode_loop+0x53/0xc0
[<ffffffff8100105a>] ? trace_hardirqs_on_thunk+0x1a/0x1c
[<ffffffff81076e6e>] SyS_reboot+0xe/0x10
[<ffffffff814c4ba5>] entry_SYSCALL_64_fastpath+0x18/0xa3
Code: 7c 4c 8d af c0 01 00 00 49 89 fe eb 10 48 09 c2 4c 89 e0 49 0f b1 55 00 4c 39 e0 74 35 4d 8b a6 c0 01 00 00 41 8b 8e 60 01 00 00 <0f> 33 8b 35 6e 02 8c 00 48 c1 e2 20 85 f6 7e d2 48 89 d3 89 cf
RIP [<ffffffff81003c92>] x86_perf_event_update+0x52/0xc0
RSP <ffff880123853b60>
---[ end trace 7ec95181faf211be ]---
note: reboot[3070] exited with preempt_count 2
Cc: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Fixes: f5967101e9de ("x86/hweight: Get rid of the special calling convention")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 65ea11ec6a82b1d44aba62b59e9eb20247e57c6e)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: Ib004aa044ba9fc73cfff97fe78c8607008ca3846
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People complained about ARCH_HWEIGHT_CFLAGS and how it throws a wrench
into kcov, lto, etc, experimentations.
Add asm versions for __sw_hweight{32,64}() and do explicit saving and
restoring of clobbered registers. This gets rid of the special calling
convention. We get to call those functions on !X86_FEATURE_POPCNT CPUs.
We still need to hardcode POPCNT and register operands as some old gas
versions which we support, do not know about POPCNT.
Btw, remove redundant REX prefix from 32-bit POPCNT because alternatives
can do padding now.
Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1464605787-20603-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit f5967101e9de12addcda4510dfbac66d7c5779c3)
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Conflicts:
lib/Makefile
Change-Id: Ie7e6dce51c7093b1162337ec8bfc5abde0d79688
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around Clang incompatibility
The constraint "rm" allows the compiler to put mix_const into memory.
When the input operand is a memory location then MUL needs an operand
size suffix, since Clang can't infer the multiplication width from the
operand.
Add and use the _ASM_MUL macro which determines the operand size and
resolves to the NUL instruction with the corresponding suffix.
This fixes the following error when building with clang:
CC arch/x86/lib/kaslr.o
/tmp/kaslr-dfe1ad.s: Assembler messages:
/tmp/kaslr-dfe1ad.s:182: Error: no instruction mnemonic suffix given and no register operands; can't size instruction
Upstream commit: 121843eb02a6
Change-Id: I53f51839705dabeb6c950d1def3a45881294129c
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Cc: Grant Grundler <grundler@chromium.org>
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Davidson <md@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170501224741.133938-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Hackmann <ghackmann@google.com>
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aes_ctrby8_avx-x86_64.S uses the C preprocessor for token pasting
of character sequences that are not valid preprocessor tokens.
While this is allowed when preprocessing assembler files it exposes
an incompatibilty between the clang and gcc preprocessors where
clang does not strip leading white space from macro parameters,
leading to the CONCAT(%xmm, i) macro expansion on line 96 resulting
in a token with a space character embedded in it.
While this could be resolved by deleting the offending space character,
the assembler is perfectly capable of doing the token pasting correctly
for itself so we can just get rid of the preprocessor macros.
Signed-off-by: Michael Davidson <md@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit fdb2726f4e61c5e3abc052f547d5a5f6c0dc5504)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: I087414d3575ea7b8703f39d429ccbf0361b314ae
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clang currently does not support these optimizations, only enable them
when they are available.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michael Davidson <md@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: grundler@chromium.org
Link: http://lkml.kernel.org/r/20170413172609.118122-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 2c4fd1ac3ff167c91272dc43c7bfd2269ef61557)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: Id040421dcf782c9a5b20a72cf68360b36da8f824
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Largely redundant code is used in different places to generate C headers
from offset information extracted from assembly language output.
Consolidate the code in Makefile.lib and use this instead.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
(cherry picked from commit ebf003f0cfb3705e60d40dedc3ec949176c741af)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: I0acd54dd27c0cf0868f221bd63728a9b67320b25
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