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Searched refs:GS (Results 1 – 25 of 26) sorted by relevance

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/linux-6.15/Documentation/arch/x86/x86_64/
H A Dfsgs.rst3 Using FS and GS segments in user space applications
25 Common FS and GS usage
41 Reading and writing the FS/GS base address
50 Accessing FS/GS base with arch_prctl()
79 RDGSBASE %reg Read the GS base register
81 WRGSBASE %reg Write the GS base register
98 the GS register and enforce them when GS base is set via
167 /* Set GS base to point to data0 */
170 /* Access offset 0 of GS */
174 /* Set GS base to point to data1 */
[all …]
H A Dfred.rst32 instruction (LKGS) for managing the state of the GS segment register.
71 LKGS behaves like the MOV to GS instruction except that it loads the
72 base address into the IA32_KERNEL_GS_BASE MSR instead of the GS
74 mucking with kernel GS, i.e., an operating system can always operate
75 with its own GS base address.
78 of the GS base address and that of the IA32_KERNEL_GS_BASE MSR, plus
/linux-6.15/tools/testing/selftests/x86/
H A Dfsgsbase.c92 enum which_base { FS, GS }; enumerator
144 base = read_base(GS); in check_gs_value()
178 base = read_base(GS); in mov_0_gs()
358 if (read_base(GS) != local) { in set_gs_and_switch_to()
366 local = read_base(GS); in set_gs_and_switch_to()
384 base = read_base(GS); in set_gs_and_switch_to()
417 base = read_base(GS); in test_unexpected_base()
/linux-6.15/tools/perf/arch/x86/tests/
H A Dregs_load.S19 #define GS 15 * 8 macro
52 movq $0, GS(%rdi)
89 movl $0, GS(%edi)
/linux-6.15/drivers/gpu/drm/ci/xfails/
H A Dvkms-none-skips.txt19 # FS: 0000000000000000(0000) GS:ffffa2ad2bc00000(0000) knlGS:0000000000000000
53 # FS: 0000000000000000(0000) GS:ffffa2ad2bc00000(0000) knlGS:0000000000000000
70 # FS: 0000000000000000(0000) GS:ffff9779abd00000(0000) knlGS:0000000000000000
104 # FS: 0000000000000000(0000) GS:ffff9779abd00000(0000) knlGS:0000000000000000
121 # FS: 0000000000000000(0000) GS:ffff8b126bd00000(0000) knlGS:0000000000000000
155 # FS: 0000000000000000(0000) GS:ffff8b126bd00000(0000) knlGS:0000000000000000
172 # FS: 0000000000000000(0000) GS:ffffa2c1abc00000(0000) knlGS:0000000000000000
223 # FS: 0000000000000000(0000) GS:ffffa0e86bc00000(0000) knlGS:0000000000000000
257 # FS: 0000000000000000(0000) GS:ffffa0e86bc00000(0000) knlGS:0000000000000000
276 # FS: 00007f0942ad56c0(0000) GS:ffff8e726bd00000(0000) knlGS:0000000000000000
[all …]
H A Di915-kbl-skips.txt60 # FS: 00007f74989c46c0(0000) GS:ffff9534eed00000(0000) knlGS:0000000000000000
113 # FS: 00007f74989c46c0(0000) GS:ffff9534eec40000(0000) knlGS:0000000000000000
H A Di915-glk-skips.txt48 # FS: 00007fbf1f4486c0(0000) GS:ffff9349fbc00000(0000) knlGS:0000000000000000
195 # FS: 00007f6b0c60d6c0(0000) GS:ffff9885fbd00000(0000) knlGS:0000000000000000
/linux-6.15/arch/x86/um/
H A Dptrace_32.c42 [GS] = HOST_GS,
73 case GS: in putreg()
126 case GS: in getreg()
H A Dptrace_64.c50 [GS >> 3] = HOST_GS,
83 case GS: in putreg()
159 case GS: in getreg()
H A Duser-offsets.c38 DEFINE(HOST_GS, GS); in foo()
62 DEFINE_LONGS(HOST_GS, GS); in foo()
H A Dsignal.c50 GETREG(GS, gs); in copy_sc_from_user()
122 PUTREG(GS, gs); in copy_sc_to_user()
/linux-6.15/arch/arm/boot/dts/microchip/
H A Dlan966x-kontron-kswitch-d10-mmt-6g-2gs.dts3 * Device Tree file for the Kontron KSwitch D10 MMT 6G-2GS
10 model = "Kontron KSwitch D10 MMT 6G-2GS";
/linux-6.15/arch/x86/kernel/
H A Dprocess_64.c153 GS enumerator
288 save_base_legacy(task, task->thread.gsindex, GS); in save_fsgs()
399 loadseg(GS, next->gsindex); in x86_fsgsbase_load()
408 next->gsindex, next->gsbase, GS); in x86_fsgsbase_load()
882 loadseg(GS, 0); in do_arch_prctl_64()
/linux-6.15/arch/x86/include/uapi/asm/
H A Dptrace-abi.h17 #define GS 10 macro
/linux-6.15/Documentation/arch/x86/
H A Dentry_64.rst90 entry interrupting kernel mode execution, then we know that the GS
97 for GS is the slower method: the RDMSR.
108 that absolutely need the more expensive check for the GS base - and we
/linux-6.15/arch/x86/um/shared/sysdep/
H A Dptrace_64.h39 #define GS (HOST_GS * sizeof(long)) macro
/linux-6.15/arch/x86/um/os-Linux/
H A Dmcontext.c16 COPY_SEG(GS); COPY_SEG(FS); COPY_SEG(ES); COPY_SEG(DS); in get_regs_from_mc()
/linux-6.15/arch/arm64/boot/dts/amlogic/
H A Dmeson-g12b-gsking-x.dts16 model = "Beelink GS-King X";
/linux-6.15/Documentation/admin-guide/hw-vuln/
H A Dspectre.rst87 a user GS.
175 the GS register to a user-space value, if the swapgs is speculatively
176 skipped, subsequent GS-related percpu accesses in the speculation
177 window will be done with the attacker-controlled GS value. This
190 swapgs, and then do a speculative percpu load using the user GS
197 speculatively do the swapgs, causing the user GS to get used for the
/linux-6.15/arch/um/os-Linux/skas/
H A Dprocess.c78 R(GS); in ptrace_reg_name()
/linux-6.15/arch/alpha/
H A DKconfig107 Wildfire AlphaServer GS 40/80/160/320
222 AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
/linux-6.15/Documentation/filesystems/
H A Ddax.rst105 setting can be set, cleared and/or queried using the `FS_IOC_FS`[`GS`]`ETXATTR` ioctl
/linux-6.15/arch/x86/lib/
H A Dx86-opcode-map.txt153 65: SEG=GS (Prefix)
523 a8: PUSH GS (d64)
524 a9: POP GS (d64)
/linux-6.15/tools/arch/x86/lib/
H A Dx86-opcode-map.txt153 65: SEG=GS (Prefix)
523 a8: PUSH GS (d64)
524 a9: POP GS (d64)
/linux-6.15/tools/arch/x86/kcpuid/
H A Dcpuid.csv281 7, 1, eax, 18, lkgs , LKGS: Load 'kernel' (userspace) GS
1008 0x80000021, 0, eax, 1, fsgs_non_serializing , WRMSR to {FS,GS,KERNEL_GS}_BASE i…

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