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| author | Linus Walleij <linus.walleij@linaro.org> | 2019-02-17 21:59:33 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-02-17 21:59:33 +0100 |
| commit | 8fab3d713ca36bf4ad4dadec0bf38f5e70b8999d (patch) | |
| tree | 18cdadced0870584ceffa02eed47f4c86da8263c /arch/x86/boot/compressed/head_64.S | |
| parent | 760a160e8b899f5ebcab99da17feebbe40ec42f1 (diff) | |
| parent | 68b7587baabfa42ca5625b709691358fee51b9d8 (diff) | |
| download | linux-8fab3d713ca36bf4ad4dadec0bf38f5e70b8999d.tar.bz2 | |
Merge tag 'gpio-v5.1-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel
gpio updates for v5.1
- support for a new variant of pca953x
- documentation fix from Wolfram
- some tegra186 name changes
- two minor fixes for madera and altera-a10sr
Diffstat (limited to 'arch/x86/boot/compressed/head_64.S')
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 64037895b085..f62e347862cc 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -600,6 +600,16 @@ ENTRY(trampoline_32bit_src) leal TRAMPOLINE_32BIT_PGTABLE_OFFSET(%ecx), %eax movl %eax, %cr3 3: + /* Set EFER.LME=1 as a precaution in case hypervsior pulls the rug */ + pushl %ecx + pushl %edx + movl $MSR_EFER, %ecx + rdmsr + btsl $_EFER_LME, %eax + wrmsr + popl %edx + popl %ecx + /* Enable PAE and LA57 (if required) paging modes */ movl $X86_CR4_PAE, %eax cmpl $0, %edx |