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| author | Kevin Loughlin <kevinloughlin@google.com> | 2024-11-22 20:23:22 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-10 14:43:56 +0200 |
| commit | 85bf8a5a3e63ba725239d726f9d5e35f579cfc1c (patch) | |
| tree | 3226d1c6a5ce2d66573ed0fa66e318b38320db08 /mm/memory.c | |
| parent | eb8b61378c41492f1deed7cc7b68fdd5c453bb86 (diff) | |
x86/sev: Add missing RIP_REL_REF() invocations during sme_enable()
[ Upstream commit 72dafb567760320f2de7447cd6e979bf9d4e5d17 ]
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
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'mm/memory.c')
0 files changed, 0 insertions, 0 deletions