AcoSail/kernel_optimize_test
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kernel_optimize_test/arch/x86
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Ben Hutchings 45b69848a2 x86/speculation: Make all RETbleed mitigations 64-bit only 
commit b648ab487f31bc4c38941bc770ea97fe394304bb upstream.

The mitigations for RETBleed are currently ineffective on x86_32 since
entry_32.S does not use the required macros.  However, for an x86_32
target, the kconfig symbols for them are still enabled by default and
/sys/devices/system/cpu/vulnerabilities/retbleed will wrongly report
that mitigations are in place.

Make all of these symbols depend on X86_64, and only enable RETHUNK by
default on X86_64.

Fixes: f43b9876e857 ("x86/retbleed: Add fine grained Kconfig knobs")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/YtwSR3NNsWp1ohfV@decadent.org.uk
[bwh: Backported to 5.10/5.15/5.18: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-11 13:06:44 +02:00
..
boot x86: Prepare asm files for straight-line-speculation 2022-07-25 11:26:28 +02:00
configs x86/kbuild: Enable CONFIG_KALLSYMS_ALL=y in the defconfigs 2022-01-27 10:54:21 +01:00
crypto crypto: x86/poly1305 - Fixup SLS 2022-07-25 11:26:32 +02:00
entry x86/retbleed: Add fine grained Kconfig knobs 2022-07-25 11:26:50 +02:00
events perf/amd/ibs: Use interrupt regs ip for stack unwinding 2022-06-09 10:21:07 +02:00
hyperv x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails 2021-11-26 10:39:19 +01:00
ia32 x86: remove address space overrides using set_fs() 2020-09-08 22:21:36 -04:00
include x86/amd: Use IBPB for firmware calls 2022-07-29 17:19:27 +02:00
kernel x86/bugs: Do not enable IBPB at firmware entry when IBPB is not available 2022-08-03 12:00:51 +02:00
kvm kvm: fix objtool relocation warning 2022-07-25 11:26:55 +02:00
lib x86/retbleed: Add fine grained Kconfig knobs 2022-07-25 11:26:50 +02:00
math-emu x86: Prepare asm files for straight-line-speculation 2022-07-25 11:26:28 +02:00
mm objtool: Update Retpoline validation 2022-07-25 11:26:44 +02:00
net x86/bpf: Use alternative RET encoding 2022-07-25 11:26:38 +02:00
oprofile
pci x86/pci/xen: Disable PCI/MSI[-X] masking for XEN_HVM guests 2022-05-09 09:05:00 +02:00
platform efi/x86: use naked RET on mixed mode call wrapper 2022-07-25 11:26:53 +02:00
power x86: Prepare asm files for straight-line-speculation 2022-07-25 11:26:28 +02:00
purgatory treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
ras
realmode x86/mm: Flush global TLB when switching to trampoline page-table 2022-01-27 10:54:14 +01:00
tools x86/tools: Fix objdump version check again 2021-08-18 08:59:15 +02:00
um x86: Prepare asm files for straight-line-speculation 2022-07-25 11:26:28 +02:00
video
xen x86/xen: Fix initialisation in hypercall_page after rethunk 2022-07-25 11:26:52 +02:00
.gitignore
Kbuild
Kconfig x86/speculation: Make all RETbleed mitigations 64-bit only 2022-08-11 13:06:44 +02:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}() 2020-10-06 11:18:04 +02:00
Makefile x86/realmode: build with -D__DISABLE_EXPORTS 2022-07-25 11:26:33 +02:00
Makefile_32.cpu
Makefile.um