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x86, xen, gdt: Remove the pvops variant of store_gdt.

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The two use-cases where we needed to store the GDT were during ACPI S3 suspend
and resume. As the patches:
 x86/gdt/i386: store/load GDT for ACPI S3 or hibernation/resume path is not needed
 x86/gdt/64-bit: store/load GDT for ACPI S3 or hibernate/resume path is not needed.

have demonstrated - there are other mechanism by which the GDT is
saved and reloaded during early resume path.

Hence we do not need to worry about the pvops call-chain for saving the
GDT and can and can eliminate it. The other areas where the store_gdt is
used are never going to be hit when running under the pvops platforms.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Link: http://lkml.kernel.org/r/1365194544-14648-4-git-send-email-konrad.wilk@oracle.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Konrad Rzeszutek Wilk
2013-04-05 16:42:23 -04:00
committed by H. Peter Anvin
parent 84e70971e6
commit 357d122670
7 changed files with 4 additions and 10 deletions
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2
arch/x86/kernel/acpi/sleep.c
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@@ -46,7 +46,7 @@ int acpi_suspend_lowlevel(void)
header->pmode_behavior = 0;
#ifndef CONFIG_64BIT
store_gdt((struct desc_ptr *)&header->pmode_gdt);
native_store_gdt((struct desc_ptr *)&header->pmode_gdt);
if (!rdmsr_safe(MSR_EFER,
&header->pmode_efer_low,