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https://github.com/Fishwaldo/Star64_linux.git
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008e359c76
- After the guest becomes secure, when we handle a page fault of a page belonging to SVM in HV, send that page to UV via UV_PAGE_IN. - Whenever a page is unmapped on the HV side, inform UV via UV_PAGE_INVAL. - Ensure all those routines that walk the secondary page tables of the guest don't do so in case of secure VM. For secure guest, the active secondary page tables are in secure memory and the secondary page tables in HV are freed when guest becomes secure. Signed-off-by: Bharata B Rao <bharata@linux.ibm.com> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Ultravisor definitions
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*
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* Copyright 2019, IBM Corporation.
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*
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*/
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#ifndef _ASM_POWERPC_ULTRAVISOR_H
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#define _ASM_POWERPC_ULTRAVISOR_H
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#include <asm/asm-prototypes.h>
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#include <asm/ultravisor-api.h>
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#include <asm/firmware.h>
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int early_init_dt_scan_ultravisor(unsigned long node, const char *uname,
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int depth, void *data);
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/*
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* In ultravisor enabled systems, PTCR becomes ultravisor privileged only for
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* writing and an attempt to write to it will cause a Hypervisor Emulation
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* Assistance interrupt.
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*/
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static inline void set_ptcr_when_no_uv(u64 val)
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{
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if (!firmware_has_feature(FW_FEATURE_ULTRAVISOR))
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mtspr(SPRN_PTCR, val);
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}
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static inline int uv_register_pate(u64 lpid, u64 dw0, u64 dw1)
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{
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return ucall_norets(UV_WRITE_PATE, lpid, dw0, dw1);
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}
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static inline int uv_share_page(u64 pfn, u64 npages)
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{
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return ucall_norets(UV_SHARE_PAGE, pfn, npages);
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}
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static inline int uv_unshare_page(u64 pfn, u64 npages)
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{
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return ucall_norets(UV_UNSHARE_PAGE, pfn, npages);
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}
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static inline int uv_unshare_all_pages(void)
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{
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return ucall_norets(UV_UNSHARE_ALL_PAGES);
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}
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static inline int uv_page_in(u64 lpid, u64 src_ra, u64 dst_gpa, u64 flags,
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u64 page_shift)
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{
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return ucall_norets(UV_PAGE_IN, lpid, src_ra, dst_gpa, flags,
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page_shift);
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}
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static inline int uv_page_out(u64 lpid, u64 dst_ra, u64 src_gpa, u64 flags,
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u64 page_shift)
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{
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return ucall_norets(UV_PAGE_OUT, lpid, dst_ra, src_gpa, flags,
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page_shift);
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}
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static inline int uv_register_mem_slot(u64 lpid, u64 start_gpa, u64 size,
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u64 flags, u64 slotid)
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{
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return ucall_norets(UV_REGISTER_MEM_SLOT, lpid, start_gpa,
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size, flags, slotid);
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}
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static inline int uv_page_inval(u64 lpid, u64 gpa, u64 page_shift)
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{
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return ucall_norets(UV_PAGE_INVAL, lpid, gpa, page_shift);
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}
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#endif /* _ASM_POWERPC_ULTRAVISOR_H */
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