| Age | Commit message (Collapse) | Author |
|---|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV-ES fixes from Borislav Petkov:
"Three fixes to SEV-ES to correct setting up the new early pagetable on
5-level paging machines, to always map boot_params and the kernel
cmdline, and disable stack protector for ../compressed/head{32,64}.c.
(Arvind Sankar)"
* tag 'x86_seves_fixes_for_v5.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/64: Explicitly map boot_params and command line
x86/head/64: Disable stack protection for head$(BITS).o
x86/boot/64: Initialize 5-level paging variables earlier
|
|
Given that this code is new, let's add a selftest for it as well.
It doesn't rely on fixed sets, instead it picks 1024 numbers and
verifies that they're not more correlated than desired.
Link: https://lore.kernel.org/netdev/20200808152628.GA27941@SDF.ORG/
Cc: George Spelvin <lkml@sdf.org>
Cc: Amit Klein <aksecurity@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: tytso@mit.edu
Cc: Florian Westphal <fw@strlen.de>
Cc: Marc Plumb <lkml.mplumb@gmail.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
|
|
With the removal of the interrupt perturbations in previous random32
change (random32: make prandom_u32() output unpredictable), the PRNG
has become 100% deterministic again. While SipHash is expected to be
way more robust against brute force than the previous Tausworthe LFSR,
there's still the risk that whoever has even one temporary access to
the PRNG's internal state is able to predict all subsequent draws till
the next reseed (roughly every minute). This may happen through a side
channel attack or any data leak.
This patch restores the spirit of commit f227e3ec3b5c ("random32: update
the net random state on interrupt and activity") in that it will perturb
the internal PRNG's statee using externally collected noise, except that
it will not pick that noise from the random pool's bits nor upon
interrupt, but will rather combine a few elements along the Tx path
that are collectively hard to predict, such as dev, skb and txq
pointers, packet length and jiffies values. These ones are combined
using a single round of SipHash into a single long variable that is
mixed with the net_rand_state upon each invocation.
The operation was inlined because it produces very small and efficient
code, typically 3 xor, 2 add and 2 rol. The performance was measured
to be the same (even very slightly better) than before the switch to
SipHash; on a 6-core 12-thread Core i7-8700k equipped with a 40G NIC
(i40e), the connection rate dropped from 556k/s to 555k/s while the
SYN cookie rate grew from 5.38 Mpps to 5.45 Mpps.
Link: https://lore.kernel.org/netdev/20200808152628.GA27941@SDF.ORG/
Cc: George Spelvin <lkml@sdf.org>
Cc: Amit Klein <aksecurity@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: tytso@mit.edu
Cc: Florian Westphal <fw@strlen.de>
Cc: Marc Plumb <lkml.mplumb@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
|
|
Non-cryptographic PRNGs may have great statistical properties, but
are usually trivially predictable to someone who knows the algorithm,
given a small sample of their output. An LFSR like prandom_u32() is
particularly simple, even if the sample is widely scattered bits.
It turns out the network stack uses prandom_u32() for some things like
random port numbers which it would prefer are *not* trivially predictable.
Predictability led to a practical DNS spoofing attack. Oops.
This patch replaces the LFSR with a homebrew cryptographic PRNG based
on the SipHash round function, which is in turn seeded with 128 bits
of strong random key. (The authors of SipHash have *not* been consulted
about this abuse of their algorithm.) Speed is prioritized over security;
attacks are rare, while performance is always wanted.
Replacing all callers of prandom_u32() is the quick fix.
Whether to reinstate a weaker PRNG for uses which can tolerate it
is an open question.
Commit f227e3ec3b5c ("random32: update the net random state on interrupt
and activity") was an earlier attempt at a solution. This patch replaces
it.
Reported-by: Amit Klein <aksecurity@gmail.com>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: tytso@mit.edu
Cc: Florian Westphal <fw@strlen.de>
Cc: Marc Plumb <lkml.mplumb@gmail.com>
Fixes: f227e3ec3b5c ("random32: update the net random state on interrupt and activity")
Signed-off-by: George Spelvin <lkml@sdf.org>
Link: https://lore.kernel.org/netdev/20200808152628.GA27941@SDF.ORG/
[ willy: partial reversal of f227e3ec3b5c; moved SIPROUND definitions
to prandom.h for later use; merged George's prandom_seed() proposal;
inlined siprand_u32(); replaced the net_rand_state[] array with 4
members to fix a build issue; cosmetic cleanups to make checkpatch
happy; fixed RANDOM32_SELFTEST build ]
Signed-off-by: Willy Tarreau <w@1wt.eu>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- A fix for undetected data corruption on Power9 Nimbus <= DD2.1 in the
emulation of VSX loads. The affected CPUs were not widely available.
- Two fixes for machine check handling in guests under PowerVM.
- A fix for our recent changes to SMP setup, when
CONFIG_CPUMASK_OFFSTACK=y.
- Three fixes for races in the handling of some of our powernv sysfs
attributes.
- One change to remove TM from the set of Power10 CPU features.
- A couple of other minor fixes.
Thanks to: Aneesh Kumar K.V, Christophe Leroy, Ganesh Goudar, Jordan
Niethe, Mahesh Salgaonkar, Michael Neuling, Oliver O'Halloran, Qian Cai,
Srikar Dronamraju, Vasant Hegde.
* tag 'powerpc-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pseries: Avoid using addr_to_pfn in real mode
powerpc/uaccess: Don't use "m<>" constraint with GCC 4.9
powerpc/eeh: Fix eeh_dev_check_failure() for PE#0
powerpc/64s: Remove TM from Power10 features
selftests/powerpc: Make alignment handler test P9N DD2.1 vector CI load workaround
powerpc: Fix undetected data corruption with P9N DD2.1 VSX CI load emulation
powerpc/powernv/dump: Handle multiple writes to ack attribute
powerpc/powernv/dump: Fix race while processing OPAL dump
powerpc/smp: Use GFP_ATOMIC while allocating tmp mask
powerpc/smp: Remove unnecessary variable
powerpc/mce: Avoid nmi_enter/exit in real mode on pseries hash
powerpc/opal_elog: Handle multiple writes to ack attribute
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull more RISC-V updates from Palmer Dabbelt:
"Just a single patch set: the remainder of Christoph's work to remove
set_fs, including the RISC-V portion"
* tag 'riscv-for-linus-5.10-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: remove address space overrides using set_fs()
riscv: implement __get_kernel_nofault and __put_user_nofault
riscv: refactor __get_user and __put_user
riscv: use memcpy based uaccess for nommu again
asm-generic: make the set_fs implementation optional
asm-generic: add nommu implementations of __{get,put}_kernel_nofault
asm-generic: improve the nommu {get,put}_user handling
uaccess: provide a generic TASK_SIZE_MAX definition
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC defconfig updates from Olof Johansson:
"We keep this in a separate branch to avoid cross-branch conflicts, but
most of the material here is fairly boring -- some new drivers turned
on for hardware since they were merged, and some refreshed files due
to time having moved a lot of entries around"
* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (33 commits)
ARM: multi_v7_defconfig: add FMC2 EBI controller support
arm64: defconfig: enable Qualcomm ASoC modules
arm64: defconfig: qcom: enable GPU clock controller for SM8[12]50
arm64: defconfig: enable INTERCONNECT for Qualcomm chipsets
arm64: defconfig: enable the sl28cpld board management controller
arm64: defconfig: Enable the eLCDIF and Raydium RM67191 drivers
arm64: defconfig: Enable Qcom SNPS Femto PHY
ARM: configs: Update Realview defconfig
ARM: configs: Update Versatile defconfig
ARM: config: aspeed_g5: Enable IBM OP Panel driver
ARM: config: aspeed-g5: Enable I2C GPIO mux driver
ARM: config: aspeed: Fix selection of media drivers
arm64: defconfig: Enable Samsung S3FWRN5 NFC driver
ARM: omap2plus_defconfig: enable generic net options
ARM: omap2plus_defconfig: enable twl4030_madc as a loadable module
arm64: defconfig: Enable clock driver for ROHM BD718x7 PMIC
arm64: defconfig: Build ADMA and ACONNECT driver
arm64: defconfig: Build AHUB component drivers
arm64: defconfig: Enable Lontium LT9611 driver
arm64: defcondfig: Enable USB ACM and FTDI drivers
...
|
|
Pull ARM Devicetree updates from Olof Johansson:
"As usual, most of the changes are to devicetrees.
Besides smaller fixes, some refactorings and cleanups, some of the new
platforms and chips (or significant features) supported are below:
Broadcom boards:
- Cisco Meraki MR32 (BCM53016-based)
- BCM2711 (RPi4) display pipeline support
Actions Semi boards:
- Caninos Loucos Labrador SBC (S500-based)
- RoseapplePi SBC (S500-based)
Allwinner SoCs/boards:
- A100 SoC with Perf1 board
- Mali, DMA, Cetrus and IR support for R40 SoC
Amlogic boards:
- Libretch S905x CC V2 board
- Hardkernel ODROID-N2+ board
Aspeed boards/platforms:
- Wistron Mowgli (AST2500-based, Power9 OpenPower server)
- Facebook Wedge400 (AST2500-based, ToR switch)
Hisilicon SoC:
- SD5203 SoC
Nvidia boards:
- Tegra234 VDK, for pre-silicon Orin SoC
NXP i.MX boards:
- Librem 5 phone
- i.MX8MM DDR4 EVK
- Variscite VAR-SOM-MX8MN SoM
- Symphony board
- Tolino Shine 2 HD
- TQMa6 SoM
- Y Soft IOTA Orion
Rockchip boards:
- NanoPi R2S board
- A95X-Z2 board
- more Rock-Pi4 variants
STM32 boards:
- Odyssey SOM board (STM32MP157CAC-based)
- DH DRC02 board
Toshiba SoCs/boards:
- Visconti SoC and TPMV7708 board"
* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (638 commits)
ARM: dts: nspire: Fix SP804 users
arm64: dts: lg: Fix SP804 users
arm64: dts: lg: Fix SP805 clocks
ARM: mstar: Fix up the fallout from moving the dts/dtsi files
ARM: mstar: Add mstar prefix to all of the dtsi/dts files
ARM: mstar: Add interrupt to pm_uart
ARM: mstar: Add interrupt controller to base dtsi
ARM: dts: meson8: remove two invalid interrupt lines from the GPU node
arm64: dts: ti: k3-j7200-common-proc-board: Add USB support
arm64: dts: ti: k3-j7200-common-proc-board: Configure the SERDES lane function
arm64: dts: ti: k3-j7200-main: Add USB controller
arm64: dts: ti: k3-j7200-main.dtsi: Add USB to SERDES lane MUX
arm64: dts: ti: k3-j7200-main: Add SERDES lane control mux
dt-bindings: ti-serdes-mux: Add defines for J7200 SoC
ARM: dts: hisilicon: add SD5203 dts
ARM: dts: hisilicon: fix the system controller compatible nodes
arm64: dts: zynqmp: Fix leds subnode name for zcu100/ultra96 v1
arm64: dts: zynqmp: Remove undocumented u-boot properties
arm64: dts: zynqmp: Remove additional compatible string for i2c IPs
arm64: dts: zynqmp: Rename buses to be align with simple-bus yaml
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC-related driver updates from Olof Johansson:
"Various driver updates for platforms. A bulk of this is smaller fixes
or cleanups, but some of the new material this time around is:
- Support for Nvidia Tegra234 SoC
- Ring accelerator support for TI AM65x
- PRUSS driver for TI platforms
- Renesas support for R-Car V3U SoC
- Reset support for Cortex-M4 processor on i.MX8MQ
There are also new socinfo entries for a handful of different SoCs and
platforms"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (131 commits)
drm/mediatek: reduce clear event
soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api
soc: mediatek: cmdq: add jump function
soc: mediatek: cmdq: add write_s_mask value function
soc: mediatek: cmdq: add write_s value function
soc: mediatek: cmdq: add read_s function
soc: mediatek: cmdq: add write_s_mask function
soc: mediatek: cmdq: add write_s function
soc: mediatek: cmdq: add address shift in jump
soc: mediatek: mtk-infracfg: Fix kerneldoc
soc: amlogic: pm-domains: use always-on flag
reset: sti: reset-syscfg: fix struct description warnings
reset: imx7: add the cm4 reset for i.MX8MQ
dt-bindings: reset: imx8mq: add m4 reset
reset: Fix and extend kerneldoc
reset: reset-zynqmp: Added support for Versal platform
dt-bindings: reset: Updated binding for Versal reset driver
reset: imx7: Support module build
soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk
soc: fsl: qman: convert to use be32_add_cpu()
...
|
|
Pull ARM SoC platform updates from Olof Johansson:
"SoC changes, a substantial part of this is cleanup of some of the
older platforms that used to have a bunch of board files.
In particular:
- Remove non-DT i.MX platforms that haven't seen activity in years,
it's time to remove them.
- A bunch of cleanup and removal of platform data for TI/OMAP
platforms, moving over to genpd for power/reset control (yay!)
- Major cleanup of Samsung S3C24xx and S3C64xx platforms, moving them
closer to multiplatform support (not quite there yet, but getting
close).
There are a few other changes too, smaller fixlets, etc. For new
platform support, the primary ones are:
- New SoC: Hisilicon SD5203, ARM926EJ-S platform.
- Cpufreq support for i.MX7ULP"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (121 commits)
ARM: mstar: Select MStar intc
ARM: stm32: Replace HTTP links with HTTPS ones
ARM: debug: add UART early console support for SD5203
ARM: hisi: add support for SD5203 SoC
ARM: omap3: enable off mode automatically
clk: imx: imx35: Remove mx35_clocks_init()
clk: imx: imx31: Remove mx31_clocks_init()
clk: imx: imx27: Remove mx27_clocks_init()
ARM: imx: Remove unused definitions
ARM: imx35: Retrieve the IIM base address from devicetree
ARM: imx3: Retrieve the AVIC base address from devicetree
ARM: imx3: Retrieve the CCM base address from devicetree
ARM: imx31: Retrieve the IIM base address from devicetree
ARM: imx27: Retrieve the CCM base address from devicetree
ARM: imx27: Retrieve the SYSCTRL base address from devicetree
ARM: s3c64xx: bring back notes from removed debug-macro.S
ARM: s3c24xx: fix Wunused-variable warning on !MMU
ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
MAINTAINERS: mark linux-samsung-soc list non-moderated
ARM: imx: Remove remnant board file support pieces
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Olof Johansson:
"I had queued up a batch of fixes that got a bit close to the release
for sending in before the merge window opened, so I'm including them
in the merge window batch instead.
Mostly smaller DT tweaks and fixes, the usual mix that we tend to have
through the releases"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: dts: iwg20d-q7-common: Fix touch controller probe failure
ARM: OMAP2+: Restore MPU power domain if cpu_cluster_pm_enter() fails
ARM: dts: am33xx: modify AM33XX_IOPAD for #pinctrl-cells = 2
soc: actions: include header to fix missing prototype
arm64: dts: ti: k3-j721e: Rename mux header and update macro names
soc: qcom: pdr: Fixup array type of get_domain_list_resp message
arm64: dts: qcom: pm660: Fix missing pound sign in interrupt-cells
arm64: dts: qcom: kitakami: Temporarily disable SDHCI1
arm64: dts: sdm630: Temporarily disable SMMUs by default
arm64: dts: sdm845: Fixup OPP table for all qup devices
arm64: dts: allwinner: h5: remove Mali GPU PMU module
ARM: dts: sun8i: r40: bananapi-m2-ultra: Fix dcdc1 regulator
soc: xilinx: Fix error code in zynqmp_pm_probe()
|
|
During shutdown the IOAPIC trigger mode is reset to edge triggered
while the vfio-pci INTx is still registered with a resampler.
This allows us to get into an infinite loop:
ioapic_set_irq
-> ioapic_lazy_update_eoi
-> kvm_ioapic_update_eoi_one
-> kvm_notify_acked_irq
-> kvm_notify_acked_gsi
-> (via irq_acked fn ptr) irqfd_resampler_ack
-> kvm_set_irq
-> (via set fn ptr) kvm_set_ioapic_irq
-> kvm_ioapic_set_irq
-> ioapic_set_irq
Commit 8be8f932e3db ("kvm: ioapic: Restrict lazy EOI update to
edge-triggered interrupts", 2020-05-04) acknowledges that this recursion
loop exists and tries to avoid it at the call to ioapic_lazy_update_eoi,
but at this point the scenario is already set, we have an edge interrupt
with resampler on the same gsi.
Fortunately, the only user of irq ack notifiers (in addition to resamplefd)
is i8254 timer interrupt reinjection. These are edge-triggered, so in
principle they would need the call to kvm_ioapic_update_eoi_one from
ioapic_lazy_update_eoi, but they already disable AVIC(*), so they don't
need the lazy EOI behavior. Therefore, remove the call to
kvm_ioapic_update_eoi_one from ioapic_lazy_update_eoi.
This fixes CVE-2020-27152. Note that this issue cannot happen with
SR-IOV assigned devices because virtual functions do not have INTx,
only MSI.
Fixes: f458d039db7e ("kvm: ioapic: Lazy update IOAPIC EOI")
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
allyesconfig results in:
ld: drivers/block/paride/paride.o: in function `pi_init':
(.text+0x1340): multiple definition of `pi_init'; arch/x86/kvm/vmx/posted_intr.o:posted_intr.c:(.init.text+0x0): first defined here
make: *** [Makefile:1164: vmlinux] Error 1
because commit:
commit 8888cdd0996c2d51cd417f9a60a282c034f3fa28
Author: Xiaoyao Li <xiaoyao.li@intel.com>
Date: Wed Sep 23 11:31:11 2020 -0700
KVM: VMX: Extract posted interrupt support to separate files
added another pi_init(), though one already existed in the paride code.
Reported-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
Replace a modulo operator with the more common pattern for computing the
gfn "offset" of a huge page to fix an i386 build error.
arch/x86/kvm/mmu/tdp_mmu.c:212: undefined reference to `__umoddi3'
In fact, almost all of tdp_mmu.c can be elided on 32-bit builds, but
that is a much larger patch.
Fixes: 2f2fad0897cb ("kvm: x86/mmu: Add functions to handle changed TDP SPTEs")
Reported-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20201024031150.9318-1-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
To 2.29
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
Pull xfs fixes from Darrick Wong:
"Two bug fixes that trickled in during the merge window:
- Make fallocate check the alignment of its arguments against the
fundamental allocation unit of the volume the file lives on, so
that we don't trigger the fs' alignment checks.
- Cancel unprocessed log intents immediately when log recovery fails,
to avoid a log deadlock"
* tag 'xfs-5.10-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: cancel intents immediately if process_intents fails
xfs: fix fallocate functions when rtextsize is larger than 1
|
|
Pull documentation fixes from Jonathan Corbet:
"A handful of late-arriving documentation fixes"
* tag 'docs-5.10-2' of git://git.lwn.net/linux:
docs: Add two missing entries in vm sysctl index
docs/vm: trivial fixes to several spelling mistakes
docs: submitting-patches: describe preserving review/test tags
Documentation: Chinese translation of Documentation/arm64/hugetlbpage.rst
Documentation: x86: fix a missing word in x86_64/mm.rst.
docs: driver-api: remove a duplicated index entry
docs: lkdtm: Modernize and improve details
docs: deprecated.rst: Expand str*cpy() replacement notes
docs/cpu-load: format the example code.
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing ring-buffer fix from Steven Rostedt:
"The success return value of ring_buffer_resize() is stated to be
zero and checked that way.
But it was incorrectly returning the size allocated.
Also, a fix to a comment"
* tag 'trace-v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ring-buffer: Update the description for ring_buffer_wait
ring-buffer: Return 0 on success from ring_buffer_resize()
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These include an ACPICA code build fix related to recent GPE register
access changes, a Kconfig cleanup related to the Dynamic Platform and
Thremal Framework (DPTF) support, a reboot issue workaround, a debug
module fix and a couple of janitorial changes.
Specifics:
- Fix ACPICA code build after recent changes related to accessing GPE
registers (Rafael Wysocki).
- Clean up DPTF part of the ACPI Kconfig (Rafael Wysocki).
- Work around a reboot issue related to RESET_REG (Zhang Rui).
- Prevent ACPI debug module from attemtping to run (and crashing)
when ACPI is disabled (Jamie Iles).
- Drop confusing comment from the ACPI processor driver (Alex Hung).
- Drop a few unreachable break statements (Tom Rix)"
* tag 'acpi-5.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: utils: remove unreachable breaks
ACPICA: Add missing type casts in GPE register access code
ACPI: DPTF: Add ACPI_DPTF Kconfig menu
ACPI: DPTF: Fix participant driver names
ACPI: processor: remove comment regarding string _UID support
ACPI: reboot: Avoid racing after writing to ACPI RESET_REG
ACPI: debug: don't allow debugging when ACPI is disabled
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"First of all, the adaptive voltage scaling (AVS) drivers go to new
platform-specific locations as planned (this part was reported to have
merge conflicts against the new arm-soc updates in linux-next).
In addition to that, there are some fixes (intel_idle, intel_pstate,
RAPL, acpi_cpufreq), the addition of on/off notifiers and idle state
accounting support to the generic power domains (genpd) code and some
janitorial changes all over.
Specifics:
- Move the AVS drivers to new platform-specific locations and get rid
of the drivers/power/avs directory (Ulf Hansson).
- Add on/off notifiers and idle state accounting support to the
generic power domains (genpd) framework (Ulf Hansson, Lina Iyer).
- Ulf will maintain the PM domain part of cpuidle-psci (Ulf Hansson).
- Make intel_idle disregard ACPI _CST if it cannot use the data
returned by that method (Mel Gorman).
- Modify intel_pstate to avoid leaving useless sysfs directory
structure behind if it cannot be registered (Chen Yu).
- Fix domain detection in the RAPL power capping driver and prevent
it from failing to enumerate the Psys RAPL domain (Zhang Rui).
- Allow acpi-cpufreq to use ACPI _PSD information with Family 19 and
later AMD chips (Wei Huang).
- Update the driver assumptions comment in intel_idle and fix a
kerneldoc comment in the runtime PM framework (Alexander Monakov,
Bean Huo).
- Avoid unnecessary resets of the cached frequency in the schedutil
cpufreq governor to reduce overhead (Wei Wang).
- Clean up the cpufreq core a bit (Viresh Kumar).
- Make assorted minor janitorial changes (Daniel Lezcano, Geert
Uytterhoeven, Hubert Jasudowicz, Tom Rix).
- Clean up and optimize the cpupower utility somewhat (Colin Ian
King, Martin Kaistra)"
* tag 'pm-5.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (23 commits)
PM: sleep: remove unreachable break
PM: AVS: Drop the avs directory and the corresponding Kconfig
PM: AVS: qcom-cpr: Move the driver to the qcom specific drivers
PM: runtime: Fix typo in pm_runtime_set_active() helper comment
PM: domains: Fix build error for genpd notifiers
powercap: Fix typo in Kconfig "Plance" -> "Plane"
cpufreq: schedutil: restore cached freq when next_f is not changed
acpi-cpufreq: Honor _PSD table setting on new AMD CPUs
PM: AVS: smartreflex Move driver to soc specific drivers
PM: AVS: rockchip-io: Move the driver to the rockchip specific drivers
PM: domains: enable domain idle state accounting
PM: domains: Add curly braces to delimit comment + statement block
PM: domains: Add support for PM domain on/off notifiers for genpd
powercap/intel_rapl: enumerate Psys RAPL domain together with package RAPL domain
powercap/intel_rapl: Fix domain detection
intel_idle: Ignore _CST if control cannot be taken from the platform
cpuidle: Remove pointless stub
intel_idle: mention assumption that WBINVD is not needed
MAINTAINERS: Add section for cpuidle-psci PM domain
cpufreq: intel_pstate: Delete intel_pstate sysfs if failed to register the driver
...
|
|
Pull more SCSI updates from James Bottomley:
"The set of core changes here is Christoph's submission path cleanups.
These introduced a couple of regressions when first proposed so they
got held over from the initial merge window pull request to give more
testing time, which they've now had and Syzbot has confirmed the
regression it detected is fixed.
The other main changes are two driver updates (arcmsr, pm80xx) and
assorted minor clean ups"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (38 commits)
scsi: qla2xxx: Fix return of uninitialized value in rval
scsi: core: Set sc_data_direction to DMA_NONE for no-transfer commands
scsi: sr: Initialize ->cmd_len
scsi: arcmsr: Update driver version to v1.50.00.02-20200819
scsi: arcmsr: Add support for ARC-1886 series RAID controllers
scsi: arcmsr: Fix device hot-plug monitoring timer stop
scsi: arcmsr: Remove unnecessary syntax
scsi: pm80xx: Driver version update
scsi: pm80xx: Increase the number of outstanding I/O supported to 1024
scsi: pm80xx: Remove DMA memory allocation for ccb and device structures
scsi: pm80xx: Increase number of supported queues
scsi: sym53c8xx_2: Fix sizeof() mismatch
scsi: isci: Fix a typo in a comment
scsi: qla4xxx: Fix inconsistent format argument type
scsi: myrb: Fix inconsistent format argument types
scsi: myrb: Remove redundant assignment to variable timeout
scsi: bfa: Fix error return in bfad_pci_init()
scsi: fcoe: Simplify the return expression of fcoe_sysfs_setup()
scsi: snic: Simplify the return expression of svnic_cq_alloc()
scsi: fnic: Simplify the return expression of vnic_wq_copy_alloc()
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- a new driver for ADC driven joysticks
- a new Zintix touchscreen driver
- enhancements to Intel SoC button array driver
- support for F3A "function" in Synaptics RMI4 driver
- assorted driver fixups
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (29 commits)
Input: Add MAINTAINERS entry for SiS i2c touch input driver
Input: evdev - per-client waitgroups
Input: synaptics - enable InterTouch for ThinkPad T14 Gen 1
Input: synaptics - enable InterTouch for ThinkPad P1/X1E gen 2
Input: synaptics-rmi4 - support bootloader v8 in f34v7
Input: synaptics-rmi4 - add support for F3A
Input: synaptics-rmi4 - rename f30_data to gpio_data
Input: add zinitix touchscreen driver
dt-bindings: input/touchscreen: add bindings for zinitix
Input: joystick - add ADC attached joystick driver.
dt-bindings: input: Add docs for ADC driven joystick
Input: sun4i-ps2 - fix handling of platform_get_irq() error
Input: twl4030_keypad - fix handling of platform_get_irq() error
Input: omap4-keypad - fix handling of platform_get_irq() error
Input: ep93xx_keypad - fix handling of platform_get_irq() error
Input: stmfts - fix a & vs && typo
Input: imx6ul_tsc - unify open/close and PM paths
Input: imx6ul_tsc - clean up some errors in imx6ul_tsc_resume()
Input: elants_i2c - fix typo for an attribute to show calibration count
Input: elants_i2c - report resolution of ABS_MT_TOUCH_MAJOR by FW information.
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Just a few additional small and trivial fixes"
* tag 'sound-fix-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Fix the return value if cb func is already registered
ALSA: usb-audio: Line6 Pod Go interface requires static clock rate quirk
ALSA: hda/ca0132: make some const arrays static, makes object smaller
ALSA: sparc: dbri: fix repeated word 'the'
|
|
Pull more drm fixes from Dave Airlie:
"This should be the last round of things for rc1, a bunch of i915
fixes, some amdgpu, more font OOB fixes and one ttm fix just found
reading code:
fbcon/fonts:
- Two patches to prevent OOB access
ttm:
- fix for evicition value range check
amdgpu:
- Sienna Cichlid fixes
- MST manager resource leak fix
- GPU reset fix
amdkfd:
- Luxmark fix for Navi1x
i915:
- Tweak initial DPCD backlight.enabled value (Sean)
- Initialize reserved MOCS indices (Ayaz)
- Mark initial fb obj as WT on eLLC machines to avoid rcu lockup (Ville)
- Support parsing of oversize batches (Chris)
- Delay execlists processing for TGL (Chris)
- Use the active reference on the vma during error capture (Chris)
- Widen CSB pointer (Chris)
- Wait for CSB entries on TGL (Chris)
- Fix unwind for scratch page allocation (Chris)
- Exclude low patches of stolen memory (Chris)
- Force VT'd workarounds when running as a guest OS (Chris)
- Drop runtime-pm assert from vpgu io accessors (Chris)"
* tag 'drm-next-2020-10-23' of git://anongit.freedesktop.org/drm/drm: (31 commits)
drm/amdgpu: correct the cu and rb info for sienna cichlid
drm/amd/pm: remove the average clock value in sysfs
drm/amd/pm: fix pp_dpm_fclk
Revert drm/amdgpu: disable sienna chichlid UMC RAS
drm/amd/pm: fix pcie information for sienna cichlid
drm/amdkfd: Use same SQ prefetch setting as amdgpu
drm/amd/swsmu: correct wrong feature bit mapping
drm/amd/psp: Fix sysfs: cannot create duplicate filename
drm/amd/display: Avoid MST manager resource leak.
drm/amd/display: Revert "drm/amd/display: Fix a list corruption"
drm/amdgpu: update golden setting for sienna_cichlid
drm/amd/swsmu: add missing feature map for sienna_cichlid
drm/amdgpu: correct the gpu reset handling for job != NULL case
drm/amdgpu: add rlc iram and dram firmware support
drm/amdgpu: add function to program pbb mode for sienna cichlid
drm/i915: Drop runtime-pm assert from vgpu io accessors
drm/i915: Force VT'd workarounds when running as a guest OS
drm/i915: Exclude low pages (128KiB) of stolen from use
drm/i915/gt: Onion unwind for scratch page allocation failure
drm/ttm: fix eviction valuable range check.
...
|
|
Quoting https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html:
You can define a local register variable and associate it with a
specified register...
The only supported use for this feature is to specify registers for
input and output operands when calling Extended asm (see Extended
Asm). This may be necessary if the constraints for a particular
machine don't provide sufficient control to select the desired
register.
On 32-bit x86, this is used to ensure that gcc will put an 8-byte value
into the %edx:%eax pair, while all other cases will just use the single
register %eax (%rax on x86-64). While the _ASM_AX actually just expands
to "%eax", note this comment next to get_user() which does something
very similar:
* The use of _ASM_DX as the register specifier is a bit of a
* simplification, as gcc only cares about it as the starting point
* and not size: for a 64-bit value it will use %ecx:%edx on 32 bits
* (%ecx being the next register in gcc's x86 register sequence), and
* %rdx on 64 bits.
However, getting this to work requires that there is no code between the
assignment to the local register variable and its use as an input to the
asm() which can possibly clobber any of the registers involved -
including evaluation of the expressions making up other inputs.
In the current code, the ptr expression used directly as an input may
cause such code to be emitted. For example, Sean Christopherson
observed that with KASAN enabled and ptr being current->set_child_tid
(from chedule_tail()), the load of current->set_child_tid causes a call
to __asan_load8() to be emitted immediately prior to the __put_user_4
call, and Naresh Kamboju reports that various mmstress tests fail on
KASAN-enabled builds.
It's also possible to synthesize a broken case without KASAN if one uses
"foo()" as the ptr argument, with foo being some "extern u64 __user
*foo(void);" (though I don't know if that appears in real code).
Fix it by making sure ptr gets evaluated before the assignment to
__val_pu, and add a comment that __val_pu must be the last thing
computed before the asm() is entered.
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Fixes: d55564cfc222 ("x86: Make __put_user() generate an out-of-line call")
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Add some structures and defines that were recently added to
the protocol documentation (see MS-FSCC sections 2.3.29-2.3.34).
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
Fix two unused variables in commit
"add support for stat of WSL reparse points for special file types"
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
This is needed so when mounting to Windows we do not
misinterpret various special files created by Linux (WSL) as symlinks.
An earlier patch addressed readdir. This patch fixes stat (getattr).
With this patch:
File: /mnt1/char
Size: 0 Blocks: 0 IO Block: 16384 character special file
Device: 34h/52d Inode: 844424930132069 Links: 1 Device type: 0,0
Access: (0755/crwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2020-10-21 17:46:51.839458900 -0500
Modify: 2020-10-21 17:46:51.839458900 -0500
Change: 2020-10-21 18:30:39.797358800 -0500
Birth: -
File: /mnt1/fifo
Size: 0 Blocks: 0 IO Block: 16384 fifo
Device: 34h/52d Inode: 1125899906842722 Links: 1
Access: (0755/prwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2020-10-21 16:21:37.259249700 -0500
Modify: 2020-10-21 16:21:37.259249700 -0500
Change: 2020-10-21 18:30:39.797358800 -0500
Birth: -
File: /mnt1/block
Size: 0 Blocks: 0 IO Block: 16384 block special file
Device: 34h/52d Inode: 844424930132068 Links: 1 Device type: 0,0
Access: (0755/brwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2020-10-21 17:10:47.913103200 -0500
Modify: 2020-10-21 17:10:47.913103200 -0500
Change: 2020-10-21 18:30:39.796725500 -0500
Birth: -
without the patch all show up incorrectly as symlinks with annoying "operation not supported error also returned"
File: /mnt1/charstat: cannot read symbolic link '/mnt1/char': Operation not supported
Size: 0 Blocks: 0 IO Block: 16384 symbolic link
Device: 34h/52d Inode: 844424930132069 Links: 1
Access: (0000/l---------) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2020-10-21 17:46:51.839458900 -0500
Modify: 2020-10-21 17:46:51.839458900 -0500
Change: 2020-10-21 18:30:39.797358800 -0500
Birth: -
File: /mnt1/fifostat: cannot read symbolic link '/mnt1/fifo': Operation not supported
Size: 0 Blocks: 0 IO Block: 16384 symbolic link
Device: 34h/52d Inode: 1125899906842722 Links: 1
Access: (0000/l---------) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2020-10-21 16:21:37.259249700 -0500
Modify: 2020-10-21 16:21:37.259249700 -0500
Change: 2020-10-21 18:30:39.797358800 -0500
Birth: -
File: /mnt1/blockstat: cannot read symbolic link '/mnt1/block': Operation not supported
Size: 0 Blocks: 0 IO Block: 16384 symbolic link
Device: 34h/52d Inode: 844424930132068 Links: 1
Access: (0000/l---------) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2020-10-21 17:10:47.913103200 -0500
Modify: 2020-10-21 17:10:47.913103200 -0500
Change: 2020-10-21 18:30:39.796725500 -0500
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Cross-tree/merge window issues:
- rtl8150: don't incorrectly assign random MAC addresses; fix late in
the 5.9 cycle started depending on a return code from a function
which changed with the 5.10 PR from the usb subsystem
Current release regressions:
- Revert "virtio-net: ethtool configurable RXCSUM", it was causing
crashes at probe when control vq was not negotiated/available
Previous release regressions:
- ixgbe: fix probing of multi-port 10 Gigabit Intel NICs with an MDIO
bus, only first device would be probed correctly
- nexthop: Fix performance regression in nexthop deletion by
effectively switching from recently added synchronize_rcu() to
synchronize_rcu_expedited()
- netsec: ignore 'phy-mode' device property on ACPI systems; the
property is not populated correctly by the firmware, but firmware
configures the PHY so just keep boot settings
Previous releases - always broken:
- tcp: fix to update snd_wl1 in bulk receiver fast path, addressing
bulk transfers getting "stuck"
- icmp: randomize the global rate limiter to prevent attackers from
getting useful signal
- r8169: fix operation under forced interrupt threading, make the
driver always use hard irqs, even on RT, given the handler is light
and only wants to schedule napi (and do so through a _irqoff()
variant, preferably)
- bpf: Enforce pointer id generation for all may-be-null register
type to avoid pointers erroneously getting marked as null-checked
- tipc: re-configure queue limit for broadcast link
- net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN
tunnels
- fix various issues in chelsio inline tls driver
Misc:
- bpf: improve just-added bpf_redirect_neigh() helper api to support
supplying nexthop by the caller - in case BPF program has already
done a lookup we can avoid doing another one
- remove unnecessary break statements
- make MCTCP not select IPV6, but rather depend on it"
* tag 'net-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (62 commits)
tcp: fix to update snd_wl1 in bulk receiver fast path
net: Properly typecast int values to set sk_max_pacing_rate
netfilter: nf_fwd_netdev: clear timestamp in forwarding path
ibmvnic: save changed mac address to adapter->mac_addr
selftests: mptcp: depends on built-in IPv6
Revert "virtio-net: ethtool configurable RXCSUM"
rtnetlink: fix data overflow in rtnl_calcit()
net: ethernet: mtk-star-emac: select REGMAP_MMIO
net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling ether_setup
net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device
bpf, libbpf: Guard bpf inline asm from bpf_tail_call_static
bpf, selftests: Extend test_tc_redirect to use modified bpf_redirect_neigh()
bpf: Fix bpf_redirect_neigh helper api to support supplying nexthop
mptcp: depends on IPV6 but not as a module
sfc: move initialisation of efx->filter_sem to efx_init_struct()
mpls: load mpls_gso after mpls_iptunnel
net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels
net/sched: act_gate: Unlock ->tcfa_lock in tc_setup_flow_action()
net: dsa: bcm_sf2: make const array static, makes object smaller
mptcp: MPTCP_IPV6 should depend on IPV6 instead of selecting it
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- Use iomap for non-journaled buffered I/O. This largely eliminates
buffer heads on filesystems where the block size matches the page
size. Many thanks to Christoph Hellwig for this patch!
- Fixes for some more journaled data filesystem bugs, found by running
xfstests with data journaling on for all files (chattr +j $MNT) (Bob
Peterson)
- gfs2_evict_inode refactoring (Bob Peterson)
- Use the statfs data in the journal during recovery instead of reading
it in from the local statfs inodes (Abhi Das)
- Several other minor fixes by various people
* tag 'gfs2-for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (30 commits)
gfs2: Recover statfs info in journal head
gfs2: lookup local statfs inodes prior to journal recovery
gfs2: Add fields for statfs info in struct gfs2_log_header_host
gfs2: Ignore subsequent errors after withdraw in rgrp_go_sync
gfs2: Eliminate gl_vm
gfs2: Only access gl_delete for iopen glocks
gfs2: Fix comments to glock_hash_walk
gfs2: eliminate GLF_QUEUED flag in favor of list_empty(gl_holders)
gfs2: Ignore journal log writes for jdata holes
gfs2: simplify gfs2_block_map
gfs2: Only set PageChecked if we have a transaction
gfs2: don't lock sd_ail_lock in gfs2_releasepage
gfs2: make gfs2_ail1_empty_one return the count of active items
gfs2: Wipe jdata and ail1 in gfs2_journal_wipe, formerly gfs2_meta_wipe
gfs2: enhance log_blocks trace point to show log blocks free
gfs2: add missing log_blocks trace points in gfs2_write_revokes
gfs2: rename gfs2_write_full_page to gfs2_write_jdata_page, remove parm
gfs2: add validation checks for size of superblock
gfs2: use-after-free in sysfs deregistration
gfs2: Fix NULL pointer dereference in gfs2_rgrp_dump
...
|
|
Pull cifs updates from Steve French:
- add support for recognizing special file types (char/block/fifo/
symlink) for files created by Linux on WSL (a format we plan to move
to as the default for creating special files on Linux, as it has
advantages over the other current option, the SFU format) in readdir.
- fix double queries to root directory when directory leases not
supported (e.g. Samba)
- fix querying mode bits (modefromsid mount option) for special file
types
- stronger encryption (gcm256), disabled by default until tested more
broadly
- allow querying owner when server reports 'well known SID' on query
dir with SMB3.1.1 POSIX extensions
* tag '5.10-rc-smb3-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6: (30 commits)
SMB3: add support for recognizing WSL reparse tags
cifs: remove bogus debug code
smb3.1.1: fix typo in compression flag
cifs: move smb version mount options into fs_context.c
cifs: move cache mount options to fs_context.ch
cifs: move security mount options into fs_context.ch
cifs: add files to host new mount api
smb3: do not try to cache root directory if dir leases not supported
smb3: fix stat when special device file and mounted with modefromsid
cifs: Print the address and port we are connecting to in generic_ip_connect()
SMB3: Resolve data corruption of TCP server info fields
cifs: make const array static, makes object smaller
SMB3.1.1: Fix ids returned in POSIX query dir
smb3: add dynamic trace point to trace when credits obtained
smb3.1.1: do not fail if no encryption required but server doesn't support it
cifs: Return the error from crypt_message when enc/dec key not found.
smb3.1.1: set gcm256 when requested
smb3.1.1: rename nonces used for GCM and CCM encryption
smb3.1.1: print warning if server does not support requested encryption type
smb3.1.1: add new module load parm enable_gcm_256
...
|
|
Pull clone/dedupe/remap code refactoring from Darrick Wong:
"Move the generic file range remap (aka reflink and dedupe) functions
out of mm/filemap.c and fs/read_write.c and into fs/remap_range.c to
reduce clutter in the first two files"
* tag 'vfs-5.10-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
vfs: move the generic write and copy checks out of mm
vfs: move the remap range helpers to remap_range.c
vfs: move generic_remap_checks out of mm
|
|
I tested this driver on my HP PA-RISC C3000 workstation and it does
work with the built-in TEAC CD-532E-B CD-ROM drive.
So drop the TODO item and adjust the file header.
Signed-off-by: Helge Deller <deller@gmx.de>
|
|
Some functions have different names between their prototypes
and the kernel-doc markup.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Fix a typo:
blk_mq_run_hw_queue -> blk_mq_run_hw_queues
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Pull KVM updates from Paolo Bonzini:
"For x86, there is a new alternative and (in the future) more scalable
implementation of extended page tables that does not need a reverse
map from guest physical addresses to host physical addresses.
For now it is disabled by default because it is still lacking a few of
the existing MMU's bells and whistles. However it is a very solid
piece of work and it is already available for people to hammer on it.
Other updates:
ARM:
- New page table code for both hypervisor and guest stage-2
- Introduction of a new EL2-private host context
- Allow EL2 to have its own private per-CPU variables
- Support of PMU event filtering
- Complete rework of the Spectre mitigation
PPC:
- Fix for running nested guests with in-kernel IRQ chip
- Fix race condition causing occasional host hard lockup
- Minor cleanups and bugfixes
x86:
- allow trapping unknown MSRs to userspace
- allow userspace to force #GP on specific MSRs
- INVPCID support on AMD
- nested AMD cleanup, on demand allocation of nested SVM state
- hide PV MSRs and hypercalls for features not enabled in CPUID
- new test for MSR_IA32_TSC writes from host and guest
- cleanups: MMU, CPUID, shared MSRs
- LAPIC latency optimizations ad bugfixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (232 commits)
kvm: x86/mmu: NX largepage recovery for TDP MMU
kvm: x86/mmu: Don't clear write flooding count for direct roots
kvm: x86/mmu: Support MMIO in the TDP MMU
kvm: x86/mmu: Support write protection for nesting in tdp MMU
kvm: x86/mmu: Support disabling dirty logging for the tdp MMU
kvm: x86/mmu: Support dirty logging for the TDP MMU
kvm: x86/mmu: Support changed pte notifier in tdp MMU
kvm: x86/mmu: Add access tracking for tdp_mmu
kvm: x86/mmu: Support invalidate range MMU notifier for TDP MMU
kvm: x86/mmu: Allocate struct kvm_mmu_pages for all pages in TDP MMU
kvm: x86/mmu: Add TDP MMU PF handler
kvm: x86/mmu: Remove disallowed_hugepage_adjust shadow_walk_iterator arg
kvm: x86/mmu: Support zapping SPTEs in the TDP MMU
KVM: Cache as_id in kvm_memory_slot
kvm: x86/mmu: Add functions to handle changed TDP SPTEs
kvm: x86/mmu: Allocate and free TDP MMU roots
kvm: x86/mmu: Init / Uninit the TDP MMU
kvm: x86/mmu: Introduce tdp_iter
KVM: mmu: extract spte.h and spte.c
KVM: mmu: Separate updating a PTE from kvm_set_pte_rmapp
...
|
|
The commit 75ae04206a4d ("parisc: Define O_NONBLOCK to become
000200000") changed the O_NONBLOCK constant to have only one bit set
(like all other architectures). This change broke some existing
userspace code (e.g. udevadm, systemd-udevd, elogind) which called
specific syscalls which do strict value checking on their flag
parameter.
This patch adds wrapper functions for the relevant syscalls. The
wrappers masks out any old invalid O_NONBLOCK flags, reports in the
sys |
