53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* E2K boot info flags support on paravirtualized kernel
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*
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* Copyright 2016 Salavat S. Guiliazov (atic@mcst.ru)
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*/
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#ifndef _E2K_ASM_PARAVIRT_BOOT_FLAGS_H_
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#define _E2K_ASM_PARAVIRT_BOOT_FLAGS_H_
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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#include <asm/paravirt/pv_ops.h>
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#ifdef CONFIG_KVM_GUEST
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#include <asm/kvm/guest/boot_flags.h>
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#else /* ! CONFIG_KVM_GUEST */
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#error "Unknown virtualization type"
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#endif /* CONFIG_KVM_GUEST */
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/*
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* bootblock manipulations (read/write/set/reset) in virtual kernel mode
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* on physical level:
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* write through and uncachable access on virtual "physical" address
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* bootblock virtual address can be only read
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*/
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#define PV_READ_BOOTBLOCK_FIELD(bootblock_p, blk_field) \
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((!paravirt_enabled()) ? \
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NATIVE_READ_BOOTBLOCK_FIELD(bootblock_p, blk_field) \
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: \
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GUEST_READ_BOOTBLOCK_FIELD(bootblock_p, blk_field))
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#define PV_WRITE_BOOTBLOCK_FIELD(bootblock_p, blk_field, field_value) \
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((!paravirt_enabled()) ? \
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NATIVE_WRITE_BOOTBLOCK_FIELD(bootblock_p, blk_field, \
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field_value) \
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: \
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GUEST_WRITE_BOOTBLOCK_FIELD(bootblock_p, blk_field, \
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field_value))
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#ifdef CONFIG_PARAVIRT_GUEST
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/* it is paravirtualized host and guest kernel */
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#define READ_BOOTBLOCK_FIELD(bootblock_p, blk_field) \
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PV_READ_BOOTBLOCK_FIELD(bootblock_p, blk_field)
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#define WRITE_BOOTBLOCK_FIELD(bootblock_p, blk_field, field_value) \
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PV_WRITE_BOOTBLOCK_FIELD(bootblock_p, blk_field, \
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field_value)
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#endif /* CONFIG_PARAVIRT_GUEST */
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#endif /* ! __ASSEMBLY__ */
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#endif /* ! _E2K_ASM_PARAVIRT_BOOT_FLAGS_H_ */
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