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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-03 05:08:50 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-03 05:08:50 +0000 |
| commit | c237094850d33ea4ae93ebb2b04ba2e23adedeb6 (patch) | |
| tree | e08643d51bc147dd580d1a5412657e15afbf8359 /arch/x86/boot | |
| parent | Adding debian version 6.8.11-1. (diff) | |
| download | linux-c237094850d33ea4ae93ebb2b04ba2e23adedeb6.tar.xz linux-c237094850d33ea4ae93ebb2b04ba2e23adedeb6.zip | |
Merging upstream version 6.8.12.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/boot')
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index bf4a10a579..1dcb794c54 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -398,6 +398,11 @@ SYM_CODE_START(startup_64) call sev_enable #endif + /* Preserve only the CR4 bits that must be preserved, and clear the rest */ + movq %cr4, %rax + andl $(X86_CR4_PAE | X86_CR4_MCE | X86_CR4_LA57), %eax + movq %rax, %cr4 + /* * configure_5level_paging() updates the number of paging levels using * a trampoline in 32-bit addressable memory if the current number does |