diff options
| author | Andrew Cooper <andrew.cooper3@citrix.com> | 2019-07-15 16:16:41 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-22 10:12:33 +0200 |
| commit | 83b584d9c6a1494170abd3a8b24f41939b23d625 (patch) | |
| tree | d1cd396adbb7280482b290a423d09005b4dd0d6d /arch/x86/kernel/paravirt.c | |
| parent | 229b969b3d38bc28bcd55841ee7ca9a9afb922f3 (diff) | |
x86/paravirt: Drop {read,write}_cr8() hooks
There is a lot of infrastructure for functionality which is used
exclusively in __{save,restore}_processor_state() on the suspend/resume
path.
cr8 is an alias of APIC_TASKPRI, and APIC_TASKPRI is saved/restored by
lapic_{suspend,resume}(). Saving and restoring cr8 independently of the
rest of the Local APIC state isn't a clever thing to be doing.
Delete the suspend/resume cr8 handling, which shrinks the size of struct
saved_context, and allows for the removal of both PVOPS.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lkml.kernel.org/r/20190715151641.29210-1-andrew.cooper3@citrix.com
Diffstat (limited to 'arch/x86/kernel/paravirt.c')
| -rw-r--r-- | arch/x86/kernel/paravirt.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 0aa6256eedd8..59d3d2763a9e 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -311,10 +311,6 @@ struct paravirt_patch_template pv_ops = { .cpu.read_cr0 = native_read_cr0, .cpu.write_cr0 = native_write_cr0, .cpu.write_cr4 = native_write_cr4, -#ifdef CONFIG_X86_64 - .cpu.read_cr8 = native_read_cr8, - .cpu.write_cr8 = native_write_cr8, -#endif .cpu.wbinvd = native_wbinvd, .cpu.read_msr = native_read_msr, .cpu.write_msr = native_write_msr, |