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| author | Kevin Loughlin <kevinloughlin@google.com> | 2024-11-22 23:23:22 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-02-28 01:01:33 +0300 |
| commit | 72dafb567760320f2de7447cd6e979bf9d4e5d17 (patch) | |
| tree | faf3f96eb34d0718e1ed7f9608696a0d00dbcf67 /tools/testing/selftests/bpf/prog_tests/access_variable_array.c | |
| parent | d082ecbc71e9e0bf49883ee4afd435a77a5101b6 (diff) | |
| download | linux-72dafb567760320f2de7447cd6e979bf9d4e5d17.tar.xz | |
x86/sev: Add missing RIP_REL_REF() invocations during sme_enable()
The following commit:
1c811d403afd ("x86/sev: Fix position dependent variable references in startup code")
introduced RIP_REL_REF() to force RIP-relative accesses to global variables,
as needed to prevent crashes during early SEV/SME startup code.
For completeness, RIP_REL_REF() should be used with additional variables during
sme_enable():
https://lore.kernel.org/all/CAMj1kXHnA0fJu6zh634=fbJswp59kSRAbhW+ubDGj1+NYwZJ-Q@mail.gmail.com/
Access these vars with RIP_REL_REF() to prevent problem reoccurence.
Fixes: 1c811d403afd ("x86/sev: Fix position dependent variable references in startup code")
Signed-off-by: Kevin Loughlin <kevinloughlin@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/r/20241122202322.977678-1-kevinloughlin@google.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/access_variable_array.c')
0 files changed, 0 insertions, 0 deletions