diff options
| author | Juergen Gross <[email protected]> | 2024-10-16 08:40:26 +0000 |
|---|---|---|
| committer | Juergen Gross <[email protected]> | 2024-12-13 08:28:43 +0000 |
| commit | a2796dff62d6c6bfc5fbebdf2bee0d5ac0438906 (patch) | |
| tree | 65ea0b02325283da4035014b83c5c7ff41816c72 /arch/x86/include/asm/xen/hypercall.h | |
| parent | x86/static-call: provide a way to do very early static-call updates (diff) | |
| download | kernel-a2796dff62d6c6bfc5fbebdf2bee0d5ac0438906.tar.gz kernel-a2796dff62d6c6bfc5fbebdf2bee0d5ac0438906.zip | |
x86/xen: don't do PV iret hypercall through hypercall page
Instead of jumping to the Xen hypercall page for doing the iret
hypercall, directly code the required sequence in xen-asm.S.
This is done in preparation of no longer using hypercall page at all,
as it has shown to cause problems with speculation mitigations.
This is part of XSA-466 / CVE-2024-53241.
Reported-by: Andrew Cooper <[email protected]>
Signed-off-by: Juergen Gross <[email protected]>
Reviewed-by: Jan Beulich <[email protected]>
Diffstat (limited to 'arch/x86/include/asm/xen/hypercall.h')
0 files changed, 0 insertions, 0 deletions