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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-14 22:22:31 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-14 22:22:31 +0200 |
| commit | bbb9e06d2c6435af9c62074ad7048910eeb2e7bc (patch) | |
| tree | 17d152543a602d65c749efaaaaafde24d5fec46c /arch/x86/Kconfig | |
| parent | USB: gadget: f_mass_storage: Fix unused variable warning (diff) | |
| parent | Linux 6.5-rc6 (diff) | |
| download | linux-bbb9e06d2c6435af9c62074ad7048910eeb2e7bc.tar.xz linux-bbb9e06d2c6435af9c62074ad7048910eeb2e7bc.zip | |
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>
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 7422db409770..e36261b4ea14 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -2593,6 +2593,13 @@ config CPU_IBRS_ENTRY This mitigates both spectre_v2 and retbleed at great cost to performance. +config CPU_SRSO + bool "Mitigate speculative RAS overflow on AMD" + depends on CPU_SUP_AMD && X86_64 && RETHUNK + default y + help + Enable the SRSO mitigation needed on AMD Zen1-4 machines. + config SLS bool "Mitigate Straight-Line-Speculation" depends on CC_HAS_SLS && X86_64 @@ -2603,6 +2610,25 @@ config SLS against straight line speculation. The kernel image might be slightly larger. +config GDS_FORCE_MITIGATION + bool "Force GDS Mitigation" + depends on CPU_SUP_INTEL + default n + help + Gather Data Sampling (GDS) is a hardware vulnerability which allows + unprivileged speculative access to data which was previously stored in + vector registers. + + This option is equivalent to setting gather_data_sampling=force on the + command line. The microcode mitigation is used if present, otherwise + AVX is disabled as a mitigation. On affected systems that are missing + the microcode any userspace code that unconditionally uses AVX will + break with this option set. + + Setting this option on systems not vulnerable to GDS has no effect. + + If in doubt, say N. + endif config ARCH_HAS_ADD_PAGES |