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hv: add fast string enhanced rep movsb/stosb check on initial

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The ACRN suppose the CPU support fast string enhanced rep.

Tracked-On: #861
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
This commit is contained in:
Li, Fei1
2018-12-17 22:21:58 +08:00
committed by wenlingz
parent 3515ca1e65
commit 78e9a84f39
3 changed files with 27 additions and 0 deletions
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3
hypervisor/include/arch/x86/msr.h
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@@ -402,6 +402,9 @@
#define PAT_MEM_TYPE_WB 0x06UL /* writeback */
#define PAT_MEM_TYPE_UCM 0x07UL /* uncached minus */
/* MISC_ENABLE bits: architectural */
#define MSR_IA32_MISC_ENABLE_FAST_STRING (1U << 0U)
#ifndef ASSEMBLER
static inline bool pat_mem_type_invalid(uint64_t x)
{