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| author | Dave Airlie <airlied@redhat.com> | 2017-11-02 05:40:41 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2017-11-02 05:40:41 +0300 |
| commit | 7a88cbd8d65d622c00bd76ba4ae1d893b292c91c (patch) | |
| tree | 826df7ac42ca13c33828d0142046186b91df686b /arch/x86/kernel/reboot.c | |
| parent | 0a4334c9e5405f836c46375c6e279cfdda7da6b5 (diff) | |
| parent | 0b07194bb55ed836c2cc7c22e866b87a14681984 (diff) | |
| download | linux-7a88cbd8d65d622c00bd76ba4ae1d893b292c91c.tar.xz | |
Backmerge tag 'v4.14-rc7' into drm-next
Linux 4.14-rc7
Requested by Ben Skeggs for nouveau to avoid major conflicts,
and things were getting a bit conflicty already, esp around amdgpu
reverts.
Diffstat (limited to 'arch/x86/kernel/reboot.c')
| -rw-r--r-- | arch/x86/kernel/reboot.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 54180fa6f66f..add33f600531 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -105,6 +105,10 @@ void __noreturn machine_real_restart(unsigned int type) load_cr3(initial_page_table); #else write_cr3(real_mode_header->trampoline_pgd); + + /* Exiting long mode will fail if CR4.PCIDE is set. */ + if (static_cpu_has(X86_FEATURE_PCID)) + cr4_clear_bits(X86_CR4_PCIDE); #endif /* Jump to the identity-mapped low memory code */ |