Revision tags: v6.6.67, v6.6.66, v6.6.65, v6.6.64, v6.6.63, v6.6.62, v6.6.61, v6.6.60, v6.6.59, v6.6.58, v6.6.57, v6.6.56, v6.6.55, v6.6.54, v6.6.53, v6.6.52, v6.6.51, v6.6.50, v6.6.49, v6.6.48, v6.6.47, v6.6.46, v6.6.45, v6.6.44, v6.6.43, v6.6.42, v6.6.41, v6.6.40, v6.6.39, v6.6.38, v6.6.37, v6.6.36, v6.6.35, v6.6.34, v6.6.33, v6.6.32, v6.6.31, v6.6.30, v6.6.29, v6.6.28, v6.6.27, v6.6.26, v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8 |
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b97d6790 |
| 13-Dec-2023 |
Joel Stanley <joel@jms.id.au> |
Merge tag 'v6.6.6' into dev-6.6
This is the 6.6.6 stable release
Signed-off-by: Joel Stanley <joel@jms.id.au>
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Revision tags: v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2 |
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0a958abf |
| 05-Sep-2023 |
Josh Poimboeuf <jpoimboe@kernel.org> |
x86/srso: Fix vulnerability reporting for missing microcode
[ Upstream commit dc6306ad5b0dda040baf1fde3cfd458e6abfc4da ]
The SRSO default safe-ret mitigation is reported as "mitigated" even if micr
x86/srso: Fix vulnerability reporting for missing microcode
[ Upstream commit dc6306ad5b0dda040baf1fde3cfd458e6abfc4da ]
The SRSO default safe-ret mitigation is reported as "mitigated" even if microcode hasn't been updated. That's wrong because userspace may still be vulnerable to SRSO attacks due to IBPB not flushing branch type predictions.
Report the safe-ret + !microcode case as vulnerable.
Also report the microcode-only case as vulnerable as it leaves the kernel open to attacks.
Fixes: fb3bd914b3ec ("x86/srso: Add a Speculative RAS Overflow mitigation") Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/a8a14f97d1b0e03ec255c81637afdf4cf0ae9c99.1693889988.git.jpoimboe@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org>
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c900529f |
| 12-Sep-2023 |
Thomas Zimmermann <tzimmermann@suse.de> |
Merge drm/drm-fixes into drm-misc-fixes
Forwarding to v6.6-rc1.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
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Revision tags: v6.1.51, v6.5.1, v6.1.50 |
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692f5510 |
| 28-Aug-2023 |
Takashi Iwai <tiwai@suse.de> |
Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v6.6
The rest of the updates for v6.6, some of the highlights include:
- A
Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v6.6
The rest of the updates for v6.6, some of the highlights include:
- A big API cleanup from Morimoto-san, rationalising the places we put functions. - Lots of work on the SOF framework, AMD and Intel drivers, including a lot of cleanup and new device support. - Standardisation of the presentation of jacks from drivers. - Provision of some generic sound card DT properties. - Conversion oof more drivers to the maple tree register cache. - New drivers for AMD Van Gogh, AWInic AW88261, Cirrus Logic cs42l43, various Intel platforms, Mediatek MT7986, RealTek RT1017 and StarFive JH7110.
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Revision tags: v6.5, v6.1.49, v6.1.48 |
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57ce6427 |
| 24-Aug-2023 |
Jakub Kicinski <kuba@kernel.org> |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
Conflicts:
include/net/inet_sock.h f866fbc842de ("ipv4: fix data-races around ine
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
Conflicts:
include/net/inet_sock.h f866fbc842de ("ipv4: fix data-races around inet->inet_id") c274af224269 ("inet: introduce inet->inet_flags") https://lore.kernel.org/all/679ddff6-db6e-4ff6-b177-574e90d0103d@tessares.net/
Adjacent changes:
drivers/net/bonding/bond_alb.c e74216b8def3 ("bonding: fix macvlan over alb bond support") f11e5bd159b0 ("bonding: support balance-alb with openvswitch")
drivers/net/ethernet/broadcom/bgmac.c d6499f0b7c7c ("net: bgmac: Return PTR_ERR() for fixed_phy_register()") 23a14488ea58 ("net: bgmac: Fix return value check for fixed_phy_register()")
drivers/net/ethernet/broadcom/genet/bcmmii.c 32bbe64a1386 ("net: bcmgenet: Fix return value check for fixed_phy_register()") acf50d1adbf4 ("net: bcmgenet: Return PTR_ERR() for fixed_phy_register()")
net/sctp/socket.c f866fbc842de ("ipv4: fix data-races around inet->inet_id") b09bde5c3554 ("inet: move inet->mc_loop to inet->inet_frags")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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fdebffeb |
| 23-Aug-2023 |
Dave Airlie <airlied@redhat.com> |
BackMerge tag 'v6.5-rc7' into drm-next
Linux 6.5-rc7
This is needed for the CI stuff and the msm pull has fixes in it.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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0bbe0649 |
| 22-Aug-2023 |
Mark Brown <broonie@kernel.org> |
Add cs42l43 PC focused SoundWire CODEC
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
This patch chain adds support for the Cirrus Logic cs42l43 PC focused SoundWire CODEC. The c
Add cs42l43 PC focused SoundWire CODEC
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
This patch chain adds support for the Cirrus Logic cs42l43 PC focused SoundWire CODEC. The chain is currently based of Lee's for-mfd-next branch.
This series is mostly just a resend keeping pace with the kernel under it, except for a minor fixup in the ASoC stuff.
Thanks, Charles
Charles Keepax (4): dt-bindings: mfd: cirrus,cs42l43: Add initial DT binding mfd: cs42l43: Add support for cs42l43 core driver pinctrl: cs42l43: Add support for the cs42l43 ASoC: cs42l43: Add support for the cs42l43
Lucas Tanure (2): soundwire: bus: Allow SoundWire peripherals to register IRQ handlers spi: cs42l43: Add SPI controller support
.../bindings/sound/cirrus,cs42l43.yaml | 313 +++ MAINTAINERS | 4 + drivers/mfd/Kconfig | 23 + drivers/mfd/Makefile | 3 + drivers/mfd/cs42l43-i2c.c | 98 + drivers/mfd/cs42l43-sdw.c | 239 ++ drivers/mfd/cs42l43.c | 1188 +++++++++ drivers/mfd/cs42l43.h | 28 + drivers/pinctrl/cirrus/Kconfig | 11 + drivers/pinctrl/cirrus/Makefile | 2 + drivers/pinctrl/cirrus/pinctrl-cs42l43.c | 609 +++++ drivers/soundwire/bus.c | 32 + drivers/soundwire/bus_type.c | 12 + drivers/spi/Kconfig | 7 + drivers/spi/Makefile | 1 + drivers/spi/spi-cs42l43.c | 284 ++ include/linux/mfd/cs42l43-regs.h | 1184 +++++++++ include/linux/mfd/cs42l43.h | 102 + include/linux/soundwire/sdw.h | 9 + include/sound/cs42l43.h | 17 + sound/soc/codecs/Kconfig | 16 + sound/soc/codecs/Makefile | 4 + sound/soc/codecs/cs42l43-jack.c | 946 +++++++ sound/soc/codecs/cs42l43-sdw.c | 74 + sound/soc/codecs/cs42l43.c | 2278 +++++++++++++++++ sound/soc/codecs/cs42l43.h | 131 + 26 files changed, 7615 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/cirrus,cs42l43.yaml create mode 100644 drivers/mfd/cs42l43-i2c.c create mode 100644 drivers/mfd/cs42l43-sdw.c create mode 100644 drivers/mfd/cs42l43.c create mode 100644 drivers/mfd/cs42l43.h create mode 100644 drivers/pinctrl/cirrus/pinctrl-cs42l43.c create mode 100644 drivers/spi/spi-cs42l43.c create mode 100644 include/linux/mfd/cs42l43-regs.h create mode 100644 include/linux/mfd/cs42l43.h create mode 100644 include/sound/cs42l43.h create mode 100644 sound/soc/codecs/cs42l43-jack.c create mode 100644 sound/soc/codecs/cs42l43-sdw.c create mode 100644 sound/soc/codecs/cs42l43.c create mode 100644 sound/soc/codecs/cs42l43.h
-- 2.30.2
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a3dd14c0 |
| 21-Aug-2023 |
Georgi Djakov <djakov@kernel.org> |
Merge tag 'v6.5-rc6' into icc-next
The fixes that got merged into v6.5-rc6 are needed here.
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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642073c3 |
| 20-Aug-2023 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
Merge commit b320441c04c9 ("Merge tag 'tty-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty") into tty-next
We need the serial-core fixes in here as well.
Signed-off-by: Greg Kr
Merge commit b320441c04c9 ("Merge tag 'tty-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty") into tty-next
We need the serial-core fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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bf98bae3 |
| 19-Aug-2023 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'x86_urgent_for_v6.5_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov: "Extraordinary embargoed times call for extraordinary measures. Tha
Merge tag 'x86_urgent_for_v6.5_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov: "Extraordinary embargoed times call for extraordinary measures. That's why this week's x86/urgent branch is larger than usual, containing all the known fallout fixes after the SRSO mitigation got merged.
I know, it is a bit late in the game but everyone who has reported a bug stemming from the SRSO pile, has tested that branch and has confirmed that it fixes their bug.
Also, I've run it on every possible hardware I have and it is looking good. It is running on this very machine while I'm typing, for 2 days now without an issue. Famous last words...
- Use LEA ...%rsp instead of ADD %rsp in the Zen1/2 SRSO return sequence as latter clobbers flags which interferes with fastop emulation in KVM, leading to guests freezing during boot
- A fix for the DIV(0) quotient data leak on Zen1 to clear the divider buffers at the right time
- Disable the SRSO mitigation on unaffected configurations as it got enabled there unnecessarily
- Change .text section name to fix CONFIG_LTO_CLANG builds
- Improve the optprobe indirect jmp check so that certain configurations can still be able to use optprobes at all
- A serious and good scrubbing of the untraining routines by PeterZ: - Add proper speculation stopping traps so that objtool is happy - Adjust objtool to handle the new thunks - Make the thunk pointer assignable to the different untraining sequences at runtime, thus avoiding the alternative at the return thunk. It simplifies the code a bit too. - Add a entry_untrain_ret() main entry point which selects the respective untraining sequence - Rename things so that they're more clear - Fix stack validation with FRAME_POINTER=y builds
- Fix static call patching to handle when a JMP to the return thunk is the last insn on the very last module memory page
- Add more documentation about what each untraining routine does and why"
* tag 'x86_urgent_for_v6.5_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/srso: Correct the mitigation status when SMT is disabled x86/static_call: Fix __static_call_fixup() objtool/x86: Fixup frame-pointer vs rethunk x86/srso: Explain the untraining sequences a bit more x86/cpu/kvm: Provide UNTRAIN_RET_VM x86/cpu: Cleanup the untrain mess x86/cpu: Rename srso_(.*)_alias to srso_alias_\1 x86/cpu: Rename original retbleed methods x86/cpu: Clean up SRSO return thunk mess x86/alternative: Make custom return thunk unconditional objtool/x86: Fix SRSO mess x86/cpu: Fix up srso_safe_ret() and __x86_return_thunk() x86/cpu: Fix __x86_return_thunk symbol type x86/retpoline,kprobes: Skip optprobe check for indirect jumps with retpolines and IBT x86/retpoline,kprobes: Fix position of thunk sections with CONFIG_LTO_CLANG x86/srso: Disable the mitigation on unaffected configurations x86/CPU/AMD: Fix the DIV(0) initial fix attempt x86/retpoline: Don't clobber RFLAGS during srso_safe_ret()
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ab472430 |
| 18-Aug-2023 |
Mark Brown <broonie@kernel.org> |
Add cs42l43 PC focused SoundWire CODEC
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
This patch chain adds support for the Cirrus Logic cs42l43 PC focused SoundWire CODEC.
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Revision tags: v6.1.46 |
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42be649d |
| 14-Aug-2023 |
Peter Zijlstra <peterz@infradead.org> |
x86/cpu: Rename srso_(.*)_alias to srso_alias_\1
For a more consistent namespace.
[ bp: Fixup names in the doc too. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
x86/cpu: Rename srso_(.*)_alias to srso_alias_\1
For a more consistent namespace.
[ bp: Fixup names in the doc too. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230814121148.976236447@infradead.org
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9e6b3986 |
| 16-Aug-2023 |
Mark Brown <broonie@kernel.org> |
regulator: Get Synquacer testing working
Merge up v6.5-rc6 which has a fix that gets Synquacer netbooting so we can include it in our testing.
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a35762dd |
| 15-Aug-2023 |
Jason Gunthorpe <jgg@nvidia.com> |
Merge tag 'v6.5-rc6' into iommufd for-next
Required for following patches.
Resolve merge conflict by using the hunk from the for-next branch and shifting the iommufd_object_deref_user() into iommuf
Merge tag 'v6.5-rc6' into iommufd for-next
Required for following patches.
Resolve merge conflict by using the hunk from the for-next branch and shifting the iommufd_object_deref_user() into iommufd_hw_pagetable_put()
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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bbb9e06d |
| 14-Aug-2023 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
Merge 6.5-rc6 into usb-next
We need the USB and Thunderbolt fixes in here to build on.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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e75850b4 |
| 13-Aug-2023 |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
Merge 6.5-rc6 into char-misc-next
We need the char/misc fixes in here as well to build on top of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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272b86ba |
| 12-Aug-2023 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'x86_bugs_for_v6.5_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mitigation fixes from Borislav Petkov: "The first set of fallout fixes after the embargo madness.
Merge tag 'x86_bugs_for_v6.5_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mitigation fixes from Borislav Petkov: "The first set of fallout fixes after the embargo madness. There will be another set next week too.
- A first series of cleanups/unifications and documentation improvements to the SRSO and GDS mitigations code which got postponed to after the embargo date
- Fix the SRSO aliasing addresses assertion so that the LLVM linker can parse it too"
* tag 'x86_bugs_for_v6.5_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: driver core: cpu: Fix the fallback cpu_show_gds() name x86: Move gds_ucode_mitigated() declaration to header x86/speculation: Add cpu_show_gds() prototype driver core: cpu: Make cpu_show_not_affected() static x86/srso: Fix build breakage with the LLVM linker Documentation/srso: Document IBPB aspect and fix formatting driver core: cpu: Unify redundant silly stubs Documentation/hw-vuln: Unify filename specification in index
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Revision tags: v6.1.45 |
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35f563d6 |
| 10-Aug-2023 |
Jakub Kicinski <kuba@kernel.org> |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge net again, after pulling in x86/bugs fixes to clang linking errors.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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9ebbb29d |
| 10-Aug-2023 |
Jakub Kicinski <kuba@kernel.org> |
Merge branch 'x86/bugs' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Cross merge x86 fixes to fix clang linking errors:
ld.lld: error: ./arch/x86/kernel/vmlinux.lds:221: at least one si
Merge branch 'x86/bugs' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Cross merge x86 fixes to fix clang linking errors:
ld.lld: error: ./arch/x86/kernel/vmlinux.lds:221: at least one side of the expression must be absolute
These will hopefully be downstream by the time we ship the next batch of fixes.
* 'x86/bugs' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Move gds_ucode_mitigated() declaration to header x86/speculation: Add cpu_show_gds() prototype driver core: cpu: Make cpu_show_not_affected() static x86/srso: Fix build breakage with the LLVM linker Documentation/srso: Document IBPB aspect and fix formatting driver core: cpu: Unify redundant silly stubs Documentation/hw-vuln: Unify filename specification in index
Link: https://lore.kernel.org/all/CAHk-=wj_b+FGTnevQSBAtCWuhCk=0oQ_THvthBW2hzqpOTLFmg@mail.gmail.com/ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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4d016ae4 |
| 10-Aug-2023 |
Jakub Kicinski <kuba@kernel.org> |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts.
Adjacent changes:
drivers/net/ethernet/intel/igc/igc_main.c 06b412
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts.
Adjacent changes:
drivers/net/ethernet/intel/igc/igc_main.c 06b412589eef ("igc: Add lock to safeguard global Qbv variables") d3750076d464 ("igc: Add TransmissionOverrun counter")
drivers/net/ethernet/microsoft/mana/mana_en.c a7dfeda6fdec ("net: mana: Fix MANA VF unload when hardware is unresponsive") a9ca9f9ceff3 ("page_pool: split types and declarations from page_pool.h") 92272ec4107e ("eth: add missing xdp.h includes in drivers")
net/mptcp/protocol.h 511b90e39250 ("mptcp: fix disconnect vs accept race") b8dc6d6ce931 ("mptcp: fix rcv buffer auto-tuning")
tools/testing/selftests/net/mptcp/mptcp_join.sh c8c101ae390a ("selftests: mptcp: join: fix 'implicit EP' test") 03668c65d153 ("selftests: mptcp: join: rework detailed report")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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55b29050 |
| 10-Aug-2023 |
Arnaldo Carvalho de Melo <acme@redhat.com> |
Merge remote-tracking branch 'torvalds/master' into perf-tools-next
To pick up some more fixes that went upstream via the perf-tools fixes branch.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redh
Merge remote-tracking branch 'torvalds/master' into perf-tools-next
To pick up some more fixes that went upstream via the perf-tools fixes branch.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Revision tags: v6.1.44, v6.1.43 |
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09f9f37c |
| 02-Aug-2023 |
Borislav Petkov (AMD) <bp@alien8.de> |
Documentation/srso: Document IBPB aspect and fix formatting
Add a note about the dependency of the User->User mitigation on the previous Spectre v2 IBPB selection.
Make the layout moar pretty.
Sig
Documentation/srso: Document IBPB aspect and fix formatting
Add a note about the dependency of the User->User mitigation on the previous Spectre v2 IBPB selection.
Make the layout moar pretty.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20230809102700.29449-4-bp@alien8.de
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138bcddb |
| 07-Aug-2023 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'x86_bugs_srso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/srso fixes from Borislav Petkov: "Add a mitigation for the speculative RAS (Return Address Stack) overf
Merge tag 'x86_bugs_srso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/srso fixes from Borislav Petkov: "Add a mitigation for the speculative RAS (Return Address Stack) overflow vulnerability on AMD processors.
In short, this is yet another issue where userspace poisons a microarchitectural structure which can then be used to leak privileged information through a side channel"
* tag 'x86_bugs_srso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/srso: Tie SBPB bit setting to microcode patch detection x86/srso: Add a forgotten NOENDBR annotation x86/srso: Fix return thunks in generated code x86/srso: Add IBPB on VMEXIT x86/srso: Add IBPB x86/srso: Add SRSO_NO support x86/srso: Add IBPB_BRTYPE support x86/srso: Add a Speculative RAS Overflow mitigation x86/bugs: Increase the x86 bugs vector size to two u32s
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Revision tags: v6.1.42, v6.1.41, v6.1.40, v6.1.39, v6.1.38, v6.1.37, v6.1.36 |
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fb3bd914 |
| 28-Jun-2023 |
Borislav Petkov (AMD) <bp@alien8.de> |
x86/srso: Add a Speculative RAS Overflow mitigation
Add a mitigation for the speculative return address stack overflow vulnerability found on AMD processors.
The mitigation works by ensuring all RE
x86/srso: Add a Speculative RAS Overflow mitigation
Add a mitigation for the speculative return address stack overflow vulnerability found on AMD processors.
The mitigation works by ensuring all RET instructions speculate to a controlled location, similar to how speculation is controlled in the retpoline sequence. To accomplish this, the __x86_return_thunk forces the CPU to mispredict every function return using a 'safe return' sequence.
To ensure the safety of this mitigation, the kernel must ensure that the safe return sequence is itself free from attacker interference. In Zen3 and Zen4, this is accomplished by creating a BTB alias between the untraining function srso_untrain_ret_alias() and the safe return function srso_safe_ret_alias() which results in evicting a potentially poisoned BTB entry and using that safe one for all function returns.
In older Zen1 and Zen2, this is accomplished using a reinterpretation technique similar to Retbleed one: srso_untrain_ret() and srso_safe_ret().
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
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