kernel_samsung_a53x/arch/x86
Juergen Gross 63ab2df174 x86/xen: remove hypercall page
commit 7fa0da5373685e7ed249af3fa317ab1e1ba8b0a6 upstream.

The hypercall page is no longer needed. It can be removed, as from the
Xen perspective it is optional.

But, from Linux's perspective, it removes naked RET instructions that
escape the speculative protections that Call Depth Tracking and/or
Untrain Ret are trying to achieve.

This is part of XSA-466 / CVE-2024-53241.

Reported-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-01-02 17:01:19 +01:00
..
boot x86/boot: Ignore NMIs during very early boot 2024-11-18 12:13:08 +01:00
configs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
crypto crypto: x86/aegis128 - access 32-bit arguments as 32-bit 2024-12-17 13:24:17 +01:00
entry Revert "x86/entry_32: Do not clobber user EFLAGS.ZF" 2024-11-24 00:22:51 +01:00
events perf/x86/intel/pt: Fix buffer full but size is 0 case 2024-12-17 13:24:17 +01:00
hyperv Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ia32 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
include x86/xen: remove hypercall page 2025-01-02 17:01:19 +01:00
kernel x86/static-call: provide a way to do very early static-call updates 2025-01-02 17:01:18 +01:00
kvm KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN 2024-12-17 13:20:51 +01:00
lib x86/retpoline: Move a NOENDBR annotation to the SRSO dummy return thunk 2024-11-19 14:19:45 +01:00
math-emu Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mm x86/mm: Fix a kdump kernel failure on SME system when CONFIG_IMA_KEXEC=y 2024-12-17 13:20:50 +01:00
net x86/returnthunk: Allow different return thunks 2024-11-18 22:25:38 +01:00
oprofile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci x86/pci/xen: Fix PCIBIOS_* return code handling 2024-11-23 23:19:56 +01:00
platform x86/xen/pvh: Annotate indirect branch as safe 2024-12-17 13:23:58 +01:00
power x86/stackprotector/32: Make the canary into a regular percpu variable 2024-11-19 09:22:37 +01:00
purgatory Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ras Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
realmode Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tools x86/boot: Ignore relocations in .notes sections in walk_relocs() too 2024-11-19 12:26:53 +01:00
um Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
video Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xen x86/xen: remove hypercall page 2025-01-02 17:01:19 +01:00
Kbuild Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig cpu: Re-enable CPU mitigations by default for !X86 architectures 2024-11-19 11:32:38 +01:00
Kconfig.assembler Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig.cpu x86/Kconfig: Transmeta Crusoe is CPU family 5, not 6 2024-11-18 12:13:31 +01:00
Kconfig.debug x86/kconfig: Select ARCH_WANT_FRAME_POINTERS again when UNWINDER_FRAME_POINTER=y 2024-11-19 12:27:09 +01:00
Makefile x86/stackprotector/32: Make the canary into a regular percpu variable 2024-11-19 09:22:37 +01:00
Makefile.um um: allow not setting extra rpaths in the linux binary 2024-11-18 23:19:35 +01:00
Makefile_32.cpu Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00