mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 11:51:27 +00:00
5aa90a8458
Pull x86 page table isolation updates from Thomas Gleixner:
"This is the final set of enabling page table isolation on x86:
- Infrastructure patches for handling the extra page tables.
- Patches which map the various bits and pieces which are required to
get in and out of user space into the user space visible page
tables.
- The required changes to have CR3 switching in the entry/exit code.
- Optimizations for the CR3 switching along with documentation how
the ASID/PCID mechanism works.
- Updates to dump pagetables to cover the user space page tables for
W+X scans and extra debugfs files to analyze both the kernel and
the user space visible page tables
The whole functionality is compile time controlled via a config switch
and can be turned on/off on the command line as well"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
x86/ldt: Make the LDT mapping RO
x86/mm/dump_pagetables: Allow dumping current pagetables
x86/mm/dump_pagetables: Check user space page table for WX pages
x86/mm/dump_pagetables: Add page table directory to the debugfs VFS hierarchy
x86/mm/pti: Add Kconfig
x86/dumpstack: Indicate in Oops whether PTI is configured and enabled
x86/mm: Clarify the whole ASID/kernel PCID/user PCID naming
x86/mm: Use INVPCID for __native_flush_tlb_single()
x86/mm: Optimize RESTORE_CR3
x86/mm: Use/Fix PCID to optimize user/kernel switches
x86/mm: Abstract switching CR3
x86/mm: Allow flushing for future ASID switches
x86/pti: Map the vsyscall page if needed
x86/pti: Put the LDT in its own PGD if PTI is on
x86/mm/64: Make a full PGD-entry size hole in the memory map
x86/events/intel/ds: Map debug buffers in cpu_entry_area
x86/cpu_entry_area: Add debugstore entries to cpu_entry_area
x86/mm/pti: Map ESPFIX into user space
x86/mm/pti: Share entry text PMD
x86/entry: Align entry text section to PMD boundary
...
167 lines
6.5 KiB
C
167 lines
6.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef _UAPI_ASM_X86_PROCESSOR_FLAGS_H
|
|
#define _UAPI_ASM_X86_PROCESSOR_FLAGS_H
|
|
/* Various flags defined: can be included from assembler. */
|
|
|
|
#include <linux/const.h>
|
|
|
|
/*
|
|
* EFLAGS bits
|
|
*/
|
|
#define X86_EFLAGS_CF_BIT 0 /* Carry Flag */
|
|
#define X86_EFLAGS_CF _BITUL(X86_EFLAGS_CF_BIT)
|
|
#define X86_EFLAGS_FIXED_BIT 1 /* Bit 1 - always on */
|
|
#define X86_EFLAGS_FIXED _BITUL(X86_EFLAGS_FIXED_BIT)
|
|
#define X86_EFLAGS_PF_BIT 2 /* Parity Flag */
|
|
#define X86_EFLAGS_PF _BITUL(X86_EFLAGS_PF_BIT)
|
|
#define X86_EFLAGS_AF_BIT 4 /* Auxiliary carry Flag */
|
|
#define X86_EFLAGS_AF _BITUL(X86_EFLAGS_AF_BIT)
|
|
#define X86_EFLAGS_ZF_BIT 6 /* Zero Flag */
|
|
#define X86_EFLAGS_ZF _BITUL(X86_EFLAGS_ZF_BIT)
|
|
#define X86_EFLAGS_SF_BIT 7 /* Sign Flag */
|
|
#define X86_EFLAGS_SF _BITUL(X86_EFLAGS_SF_BIT)
|
|
#define X86_EFLAGS_TF_BIT 8 /* Trap Flag */
|
|
#define X86_EFLAGS_TF _BITUL(X86_EFLAGS_TF_BIT)
|
|
#define X86_EFLAGS_IF_BIT 9 /* Interrupt Flag */
|
|
#define X86_EFLAGS_IF _BITUL(X86_EFLAGS_IF_BIT)
|
|
#define X86_EFLAGS_DF_BIT 10 /* Direction Flag */
|
|
#define X86_EFLAGS_DF _BITUL(X86_EFLAGS_DF_BIT)
|
|
#define X86_EFLAGS_OF_BIT 11 /* Overflow Flag */
|
|
#define X86_EFLAGS_OF _BITUL(X86_EFLAGS_OF_BIT)
|
|
#define X86_EFLAGS_IOPL_BIT 12 /* I/O Privilege Level (2 bits) */
|
|
#define X86_EFLAGS_IOPL (_AC(3,UL) << X86_EFLAGS_IOPL_BIT)
|
|
#define X86_EFLAGS_NT_BIT 14 /* Nested Task */
|
|
#define X86_EFLAGS_NT _BITUL(X86_EFLAGS_NT_BIT)
|
|
#define X86_EFLAGS_RF_BIT 16 /* Resume Flag */
|
|
#define X86_EFLAGS_RF _BITUL(X86_EFLAGS_RF_BIT)
|
|
#define X86_EFLAGS_VM_BIT 17 /* Virtual Mode */
|
|
#define X86_EFLAGS_VM _BITUL(X86_EFLAGS_VM_BIT)
|
|
#define X86_EFLAGS_AC_BIT 18 /* Alignment Check/Access Control */
|
|
#define X86_EFLAGS_AC _BITUL(X86_EFLAGS_AC_BIT)
|
|
#define X86_EFLAGS_VIF_BIT 19 /* Virtual Interrupt Flag */
|
|
#define X86_EFLAGS_VIF _BITUL(X86_EFLAGS_VIF_BIT)
|
|
#define X86_EFLAGS_VIP_BIT 20 /* Virtual Interrupt Pending */
|
|
#define X86_EFLAGS_VIP _BITUL(X86_EFLAGS_VIP_BIT)
|
|
#define X86_EFLAGS_ID_BIT 21 /* CPUID detection */
|
|
#define X86_EFLAGS_ID _BITUL(X86_EFLAGS_ID_BIT)
|
|
|
|
/*
|
|
* Basic CPU control in CR0
|
|
*/
|
|
#define X86_CR0_PE_BIT 0 /* Protection Enable */
|
|
#define X86_CR0_PE _BITUL(X86_CR0_PE_BIT)
|
|
#define X86_CR0_MP_BIT 1 /* Monitor Coprocessor */
|
|
#define X86_CR0_MP _BITUL(X86_CR0_MP_BIT)
|
|
#define X86_CR0_EM_BIT 2 /* Emulation */
|
|
#define X86_CR0_EM _BITUL(X86_CR0_EM_BIT)
|
|
#define X86_CR0_TS_BIT 3 /* Task Switched */
|
|
#define X86_CR0_TS _BITUL(X86_CR0_TS_BIT)
|
|
#define X86_CR0_ET_BIT 4 /* Extension Type */
|
|
#define X86_CR0_ET _BITUL(X86_CR0_ET_BIT)
|
|
#define X86_CR0_NE_BIT 5 /* Numeric Error */
|
|
#define X86_CR0_NE _BITUL(X86_CR0_NE_BIT)
|
|
#define X86_CR0_WP_BIT 16 /* Write Protect */
|
|
#define X86_CR0_WP _BITUL(X86_CR0_WP_BIT)
|
|
#define X86_CR0_AM_BIT 18 /* Alignment Mask */
|
|
#define X86_CR0_AM _BITUL(X86_CR0_AM_BIT)
|
|
#define X86_CR0_NW_BIT 29 /* Not Write-through */
|
|
#define X86_CR0_NW _BITUL(X86_CR0_NW_BIT)
|
|
#define X86_CR0_CD_BIT 30 /* Cache Disable */
|
|
#define X86_CR0_CD _BITUL(X86_CR0_CD_BIT)
|
|
#define X86_CR0_PG_BIT 31 /* Paging */
|
|
#define X86_CR0_PG _BITUL(X86_CR0_PG_BIT)
|
|
|
|
/*
|
|
* Paging options in CR3
|
|
*/
|
|
#define X86_CR3_PWT_BIT 3 /* Page Write Through */
|
|
#define X86_CR3_PWT _BITUL(X86_CR3_PWT_BIT)
|
|
#define X86_CR3_PCD_BIT 4 /* Page Cache Disable */
|
|
#define X86_CR3_PCD _BITUL(X86_CR3_PCD_BIT)
|
|
|
|
#define X86_CR3_PCID_BITS 12
|
|
#define X86_CR3_PCID_MASK (_AC((1UL << X86_CR3_PCID_BITS) - 1, UL))
|
|
|
|
#define X86_CR3_PCID_NOFLUSH_BIT 63 /* Preserve old PCID */
|
|
#define X86_CR3_PCID_NOFLUSH _BITULL(X86_CR3_PCID_NOFLUSH_BIT)
|
|
|
|
/*
|
|
* Intel CPU features in CR4
|
|
*/
|
|
#define X86_CR4_VME_BIT 0 /* enable vm86 extensions */
|
|
#define X86_CR4_VME _BITUL(X86_CR4_VME_BIT)
|
|
#define X86_CR4_PVI_BIT 1 /* virtual interrupts flag enable */
|
|
#define X86_CR4_PVI _BITUL(X86_CR4_PVI_BIT)
|
|
#define X86_CR4_TSD_BIT 2 /* disable time stamp at ipl 3 */
|
|
#define X86_CR4_TSD _BITUL(X86_CR4_TSD_BIT)
|
|
#define X86_CR4_DE_BIT 3 /* enable debugging extensions */
|
|
#define X86_CR4_DE _BITUL(X86_CR4_DE_BIT)
|
|
#define X86_CR4_PSE_BIT 4 /* enable page size extensions */
|
|
#define X86_CR4_PSE _BITUL(X86_CR4_PSE_BIT)
|
|
#define X86_CR4_PAE_BIT 5 /* enable physical address extensions */
|
|
#define X86_CR4_PAE _BITUL(X86_CR4_PAE_BIT)
|
|
#define X86_CR4_MCE_BIT 6 /* Machine check enable */
|
|
#define X86_CR4_MCE _BITUL(X86_CR4_MCE_BIT)
|
|
#define X86_CR4_PGE_BIT 7 /* enable global pages */
|
|
#define X86_CR4_PGE _BITUL(X86_CR4_PGE_BIT)
|
|
#define X86_CR4_PCE_BIT 8 /* enable performance counters at ipl 3 */
|
|
#define X86_CR4_PCE _BITUL(X86_CR4_PCE_BIT)
|
|
#define X86_CR4_OSFXSR_BIT 9 /* enable fast FPU save and restore */
|
|
#define X86_CR4_OSFXSR _BITUL(X86_CR4_OSFXSR_BIT)
|
|
#define X86_CR4_OSXMMEXCPT_BIT 10 /* enable unmasked SSE exceptions */
|
|
#define X86_CR4_OSXMMEXCPT _BITUL(X86_CR4_OSXMMEXCPT_BIT)
|
|
#define X86_CR4_UMIP_BIT 11 /* enable UMIP support */
|
|
#define X86_CR4_UMIP _BITUL(X86_CR4_UMIP_BIT)
|
|
#define X86_CR4_LA57_BIT 12 /* enable 5-level page tables */
|
|
#define X86_CR4_LA57 _BITUL(X86_CR4_LA57_BIT)
|
|
#define X86_CR4_VMXE_BIT 13 /* enable VMX virtualization */
|
|
#define X86_CR4_VMXE _BITUL(X86_CR4_VMXE_BIT)
|
|
#define X86_CR4_SMXE_BIT 14 /* enable safer mode (TXT) */
|
|
#define X86_CR4_SMXE _BITUL(X86_CR4_SMXE_BIT)
|
|
#define X86_CR4_FSGSBASE_BIT 16 /* enable RDWRFSGS support */
|
|
#define X86_CR4_FSGSBASE _BITUL(X86_CR4_FSGSBASE_BIT)
|
|
#define X86_CR4_PCIDE_BIT 17 /* enable PCID support */
|
|
#define X86_CR4_PCIDE _BITUL(X86_CR4_PCIDE_BIT)
|
|
#define X86_CR4_OSXSAVE_BIT 18 /* enable xsave and xrestore */
|
|
#define X86_CR4_OSXSAVE _BITUL(X86_CR4_OSXSAVE_BIT)
|
|
#define X86_CR4_SMEP_BIT 20 /* enable SMEP support */
|
|
#define X86_CR4_SMEP _BITUL(X86_CR4_SMEP_BIT)
|
|
#define X86_CR4_SMAP_BIT 21 /* enable SMAP support */
|
|
#define X86_CR4_SMAP _BITUL(X86_CR4_SMAP_BIT)
|
|
#define X86_CR4_PKE_BIT 22 /* enable Protection Keys support */
|
|
#define X86_CR4_PKE _BITUL(X86_CR4_PKE_BIT)
|
|
|
|
/*
|
|
* x86-64 Task Priority Register, CR8
|
|
*/
|
|
#define X86_CR8_TPR _AC(0x0000000f,UL) /* task priority register */
|
|
|
|
/*
|
|
* AMD and Transmeta use MSRs for configuration; see <asm/msr-index.h>
|
|
*/
|
|
|
|
/*
|
|
* NSC/Cyrix CPU configuration register indexes
|
|
*/
|
|
#define CX86_PCR0 0x20
|
|
#define CX86_GCR 0xb8
|
|
#define CX86_CCR0 0xc0
|
|
#define CX86_CCR1 0xc1
|
|
#define CX86_CCR2 0xc2
|
|
#define CX86_CCR3 0xc3
|
|
#define CX86_CCR4 0xe8
|
|
#define CX86_CCR5 0xe9
|
|
#define CX86_CCR6 0xea
|
|
#define CX86_CCR7 0xeb
|
|
#define CX86_PCR1 0xf0
|
|
#define CX86_DIR0 0xfe
|
|
#define CX86_DIR1 0xff
|
|
#define CX86_ARR_BASE 0xc4
|
|
#define CX86_RCR_BASE 0xdc
|
|
|
|
#define CR0_STATE (X86_CR0_PE | X86_CR0_MP | X86_CR0_ET | \
|
|
X86_CR0_NE | X86_CR0_WP | X86_CR0_AM | \
|
|
X86_CR0_PG)
|
|
|
|
#endif /* _UAPI_ASM_X86_PROCESSOR_FLAGS_H */
|