Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net

Some of the devlink bits were tricky, but I think I got it right.

Signed-off-by: David S. Miller <davem@davemloft.net>

Author: davem330

.mailmap

@@ -25,6 +25,8 @@ Aleksey Gorelov <aleksey_gorelov@phoenix.com>
 Alexander Lobakin <alobakin@pm.me> <alobakin@dlink.ru>
 Alexander Lobakin <alobakin@pm.me> <alobakin@marvell.com>
 Alexander Lobakin <alobakin@pm.me> <bloodyreaper@yandex.ru>
+Alexander Mikhalitsyn <alexander@mihalicyn.com> <alexander.mikhalitsyn@virtuozzo.com>
+Alexander Mikhalitsyn <alexander@mihalicyn.com> <aleksandr.mikhalitsyn@canonical.com>
 Alexandre Belloni <alexandre.belloni@bootlin.com> <alexandre.belloni@free-electrons.com>
 Alexei Starovoitov <ast@kernel.org> <alexei.starovoitov@gmail.com>
 Alexei Starovoitov <ast@kernel.org> <ast@fb.com>

Documentation/admin-guide/hw-vuln/cross-thread-rsb.rst

@@ -0,0 +1,92 @@
+
+.. SPDX-License-Identifier: GPL-2.0
+
+Cross-Thread Return Address Predictions
+=======================================
+
+Certain AMD and Hygon processors are subject to a cross-thread return address
+predictions vulnerability. When running in SMT mode and one sibling thread
+transitions out of C0 state, the other sibling thread could use return target
+predictions from the sibling thread that transitioned out of C0.
+
+The Spectre v2 mitigations protect the Linux kernel, as it fills the return
+address prediction entries with safe targets when context switching to the idle
+thread. However, KVM does allow a VMM to prevent exiting guest mode when
+transitioning out of C0. This could result in a guest-controlled return target
+being consumed by the sibling thread.
+
+Affected processors
+-------------------
+
+The following CPUs are vulnerable:
+
+    - AMD Family 17h processors
+    - Hygon Family 18h processors
+
+Related CVEs
+------------
+
+The following CVE entry is related to this issue:
+
+   ==============  =======================================
+   CVE-2022-27672  Cross-Thread Return Address Predictions
+   ==============  =======================================
+
+Problem
+-------
+
+Affected SMT-capable processors support 1T and 2T modes of execution when SMT
+is enabled. In 2T mode, both threads in a core are executing code. For the
+processor core to enter 1T mode, it is required that one of the threads
+requests to transition out of the C0 state. This can be communicated with the
+HLT instruction or with an MWAIT instruction that requests non-C0.
+When the thread re-enters the C0 state, the processor transitions back
+to 2T mode, assuming the other thread is also still in C0 state.
+
+In affected processors, the return address predictor (RAP) is partitioned
+depending on the SMT mode. For instance, in 2T mode each thread uses a private
+16-entry RAP, but in 1T mode, the active thread uses a 32-entry RAP. Upon
+transition between 1T/2T mode, the RAP contents are not modified but the RAP
+pointers (which control the next return target to use for predictions) may
+change. This behavior may result in return targets from one SMT thread being
+used by RET predictions in the sibling thread following a 1T/2T switch. In
+particular, a RET instruction executed immediately after a transition to 1T may
+use a return target from the thread that just became idle. In theory, this
+could lead to information disclosure if the return targets used do not come
+from trustworthy code.
+
+Attack scenarios
+----------------
+
+An attack can be mounted on affected processors by performing a series of CALL
+instructions with targeted return locations and then transitioning out of C0
+state.
+
+Mitigation mechanism
+--------------------
+
+Before entering idle state, the kernel context switches to the idle thread. The
+context switch fills the RAP entries (referred to as the RSB in Linux) with safe
+targets by performing a sequence of CALL instructions.
+
+Prevent a guest VM from directly putting the processor into an idle state by
+intercepting HLT and MWAIT instructions.
+
+Both mitigations are required to fully address this issue.
+
+Mitigation control on the kernel command line
+---------------------------------------------
+
+Use existing Spectre v2 mitigations that will fill the RSB on context switch.
+
+Mitigation control for KVM - module parameter
+---------------------------------------------
+
+By default, the KVM hypervisor mitigates this issue by intercepting guest
+attempts to transition out of C0. A VMM can use the KVM_CAP_X86_DISABLE_EXITS
+capability to override those interceptions, but since this is not common, the
+mitigation that covers this path is not enabled by default.
+
+The mitigation for the KVM_CAP_X86_DISABLE_EXITS capability can be turned on
+using the boolean module parameter mitigate_smt_rsb, e.g.:
+        kvm.mitigate_smt_rsb=1

Documentation/admin-guide/hw-vuln/index.rst

@@ -18,3 +18,4 @@ are configurable at compile, boot or run time.
    core-scheduling.rst
    l1d_flush.rst
    processor_mmio_stale_data.rst
+   cross-thread-rsb.rst

MAINTAINERS

@@ -16135,15 +16135,15 @@ F:	drivers/pci/controller/pci-v3-semi.c
 
 PCI ENDPOINT SUBSYSTEM
 M:	Lorenzo Pieralisi <lpieralisi@kernel.org>
-R:	Krzysztof Wilczyński <kw@linux.com>
+M:	Krzysztof Wilczyński <kw@linux.com>
 R:	Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
 R:	Kishon Vijay Abraham I <kishon@kernel.org>
 L:	linux-pci@vger.kernel.org
 S:	Supported
 Q:	https://patchwork.kernel.org/project/linux-pci/list/
 B:	https://bugzilla.kernel.org
 C:	irc://irc.oftc.net/linux-pci
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git
 F:	Documentation/PCI/endpoint/*
 F:	Documentation/misc-devices/pci-endpoint-test.rst
 F:	drivers/misc/pci_endpoint_test.c
@@ -16178,7 +16178,7 @@ S:	Supported
 Q:	https://patchwork.kernel.org/project/linux-pci/list/
 B:	https://bugzilla.kernel.org
 C:	irc://irc.oftc.net/linux-pci
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git
 F:	Documentation/driver-api/pci/p2pdma.rst
 F:	drivers/pci/p2pdma.c
 F:	include/linux/pci-p2pdma.h
@@ -16200,14 +16200,14 @@ F:	drivers/pci/controller/pci-xgene-msi.c
 
 PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS
 M:	Lorenzo Pieralisi <lpieralisi@kernel.org>
+M:	Krzysztof Wilczyński <kw@linux.com>
 R:	Rob Herring <robh@kernel.org>
-R:	Krzysztof Wilczyński <kw@linux.com>
 L:	linux-pci@vger.kernel.org
 S:	Supported
 Q:	https://patchwork.kernel.org/project/linux-pci/list/
 B:	https://bugzilla.kernel.org
 C:	irc://irc.oftc.net/linux-pci
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git
 F:	Documentation/devicetree/bindings/pci/
 F:	drivers/pci/controller/
 F:	drivers/pci/pci-bridge-emul.c
@@ -16220,7 +16220,7 @@ S:	Supported
 Q:	https://patchwork.kernel.org/project/linux-pci/list/
 B:	https://bugzilla.kernel.org
 C:	irc://irc.oftc.net/linux-pci
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git
 F:	Documentation/PCI/
 F:	Documentation/devicetree/bindings/pci/
 F:	arch/x86/kernel/early-quirks.c
@@ -20120,6 +20120,7 @@ F:	drivers/watchdog/sunplus_wdt.c
 SUPERH
 M:	Yoshinori Sato <ysato@users.sourceforge.jp>
 M:	Rich Felker <dalias@libc.org>
+M:	John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
 L:	linux-sh@vger.kernel.org
 S:	Maintained
 Q:	http://patchwork.kernel.org/project/linux-sh/list/
@@ -20352,8 +20353,7 @@ S:	Maintained
 F:	drivers/platform/x86/system76_acpi.c
 
 SYSV FILESYSTEM
-M:	Christoph Hellwig <hch@infradead.org>
-S:	Maintained
+S:	Orphan
 F:	Documentation/filesystems/sysv-fs.rst
 F:	fs/sysv/
 F:	include/linux/sysv_fs.h
@@ -21848,11 +21848,9 @@ W:	http://en.wikipedia.org/wiki/Util-linux
 T:	git git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git
 
 UUID HELPERS
-M:	Christoph Hellwig <hch@lst.de>
 R:	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
-T:	git git://git.infradead.org/users/hch/uuid.git
 F:	include/linux/uuid.h
 F:	include/uapi/linux/uuid.h
 F:	lib/test_uuid.c

Makefile

@@ -2,7 +2,7 @@
 VERSION = 6
 PATCHLEVEL = 2
 SUBLEVEL = 0
-EXTRAVERSION = -rc7
+EXTRAVERSION = -rc8
 NAME = Hurr durr I'ma ninja sloth
 
 # *DOCUMENTATION*

arch/arm/boot/dts/rk3288.dtsi

@@ -1181,6 +1181,7 @@
 		clock-names = "dp", "pclk";
 		phys = <&edp_phy>;
 		phy-names = "dp";
+		power-domains = <&power RK3288_PD_VIO>;
 		resets = <&cru SRST_EDP>;
 		reset-names = "dp";
 		rockchip,grf = <&grf>;

arch/arm/boot/dts/stihxxx-b2120.dtsi

@@ -178,7 +178,7 @@
 				tsin-num = <0>;
 				serial-not-parallel;
 				i2c-bus = <&ssc2>;
-				reset-gpios = <&pio15 4 GPIO_ACTIVE_HIGH>;
+				reset-gpios = <&pio15 4 GPIO_ACTIVE_LOW>;
 				dvb-card = <STV0367_TDA18212_NIMA_1>;
 			};
 		};

arch/arm64/boot/dts/amlogic/meson-axg.dtsi

@@ -1886,7 +1886,7 @@
 			sd_emmc_b: sd@5000 {
 				compatible = "amlogic,meson-axg-mmc";
 				reg = <0x0 0x5000 0x0 0x800>;
-				interrupts = <GIC_SPI 217 IRQ_TYPE_EDGE_RISING>;
+				interrupts = <GIC_SPI 217 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 				clocks = <&clkc CLKID_SD_EMMC_B>,
 					<&clkc CLKID_SD_EMMC_B_CLK0>,
@@ -1898,7 +1898,7 @@
 			sd_emmc_c: mmc@7000 {
 				compatible = "amlogic,meson-axg-mmc";
 				reg = <0x0 0x7000 0x0 0x800>;
-				interrupts = <GIC_SPI 218 IRQ_TYPE_EDGE_RISING>;
+				interrupts = <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 				clocks = <&clkc CLKID_SD_EMMC_C>,
 					<&clkc CLKID_SD_EMMC_C_CLK0>,

arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi

@@ -2324,7 +2324,7 @@
 		sd_emmc_a: sd@ffe03000 {
 			compatible = "amlogic,meson-axg-mmc";
 			reg = <0x0 0xffe03000 0x0 0x800>;
-			interrupts = <GIC_SPI 189 IRQ_TYPE_EDGE_RISING>;
+			interrupts = <GIC_SPI 189 IRQ_TYPE_LEVEL_HIGH>;
 			status = "disabled";
 			clocks = <&clkc CLKID_SD_EMMC_A>,
 				 <&clkc CLKID_SD_EMMC_A_CLK0>,
@@ -2336,7 +2336,7 @@
 		sd_emmc_b: sd@ffe05000 {
 			compatible = "amlogic,meson-axg-mmc";
 			reg = <0x0 0xffe05000 0x0 0x800>;
-			interrupts = <GIC_SPI 190 IRQ_TYPE_EDGE_RISING>;
+			interrupts = <GIC_SPI 190 IRQ_TYPE_LEVEL_HIGH>;
 			status = "disabled";
 			clocks = <&clkc CLKID_SD_EMMC_B>,
 				 <&clkc CLKID_SD_EMMC_B_CLK0>,
@@ -2348,7 +2348,7 @@
 		sd_emmc_c: mmc@ffe07000 {
 			compatible = "amlogic,meson-axg-mmc";
 			reg = <0x0 0xffe07000 0x0 0x800>;
-			interrupts = <GIC_SPI 191 IRQ_TYPE_EDGE_RISING>;
+			interrupts = <GIC_SPI 191 IRQ_TYPE_LEVEL_HIGH>;
 			status = "disabled";
 			clocks = <&clkc CLKID_SD_EMMC_C>,
 				 <&clkc CLKID_SD_EMMC_C_CLK0>,

arch/arm64/boot/dts/amlogic/meson-gx.dtsi

@@ -603,21 +603,21 @@
 			sd_emmc_a: mmc@70000 {
 				compatible = "amlogic,meson-gx-mmc", "amlogic,meson-gxbb-mmc";
 				reg = <0x0 0x70000 0x0 0x800>;
-				interrupts = <GIC_SPI 216 IRQ_TYPE_EDGE_RISING>;
+				interrupts = <GIC_SPI 216 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			sd_emmc_b: mmc@72000 {
 				compatible = "amlogic,meson-gx-mmc", "amlogic,meson-gxbb-mmc";
 				reg = <0x0 0x72000 0x0 0x800>;
-				interrupts = <GIC_SPI 217 IRQ_TYPE_EDGE_RISING>;
+				interrupts = <GIC_SPI 217 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			sd_emmc_c: mmc@74000 {
 				compatible = "amlogic,meson-gx-mmc", "amlogic,meson-gxbb-mmc";
 				reg = <0x0 0x74000 0x0 0x800>;
-				interrupts = <GIC_SPI 218 IRQ_TYPE_EDGE_RISING>;
+				interrupts = <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 		};