From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- arch/x86/lib/putuser.S | 156 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 156 insertions(+) create mode 100644 arch/x86/lib/putuser.S (limited to 'arch/x86/lib/putuser.S') diff --git a/arch/x86/lib/putuser.S b/arch/x86/lib/putuser.S new file mode 100644 index 000000000..46d9e9b98 --- /dev/null +++ b/arch/x86/lib/putuser.S @@ -0,0 +1,156 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * __put_user functions. + * + * (C) Copyright 2005 Linus Torvalds + * (C) Copyright 2005 Andi Kleen + * (C) Copyright 2008 Glauber Costa + * + * These functions have a non-standard call interface + * to make them more efficient, especially as they + * return an error value in addition to the "real" + * return value. + */ +#include +#include +#include +#include +#include +#include +#include + +/* + * __put_user_X + * + * Inputs: %eax[:%edx] contains the data + * %ecx contains the address + * + * Outputs: %ecx is error code (0 or -EFAULT) + * + * Clobbers: %ebx needed for task pointer + * + * These functions should not modify any other registers, + * as they get called from within inline assembly. + */ + +.macro check_range size:req +.if IS_ENABLED(CONFIG_X86_64) + mov %rcx, %rbx + sar $63, %rbx + or %rbx, %rcx +.else + cmp $TASK_SIZE_MAX-\size+1, %ecx + jae .Lbad_put_user +.endif +.endm + +.text +SYM_FUNC_START(__put_user_1) + ANNOTATE_NOENDBR + check_range size=1 + ASM_STAC +1: movb %al,(%_ASM_CX) + xor %ecx,%ecx + ASM_CLAC + RET +SYM_FUNC_END(__put_user_1) +EXPORT_SYMBOL(__put_user_1) + +SYM_FUNC_START(__put_user_nocheck_1) + ANNOTATE_NOENDBR + ASM_STAC +2: movb %al,(%_ASM_CX) + xor %ecx,%ecx + ASM_CLAC + RET +SYM_FUNC_END(__put_user_nocheck_1) +EXPORT_SYMBOL(__put_user_nocheck_1) + +SYM_FUNC_START(__put_user_2) + ANNOTATE_NOENDBR + check_range size=2 + ASM_STAC +3: movw %ax,(%_ASM_CX) + xor %ecx,%ecx + ASM_CLAC + RET +SYM_FUNC_END(__put_user_2) +EXPORT_SYMBOL(__put_user_2) + +SYM_FUNC_START(__put_user_nocheck_2) + ANNOTATE_NOENDBR + ASM_STAC +4: movw %ax,(%_ASM_CX) + xor %ecx,%ecx + ASM_CLAC + RET +SYM_FUNC_END(__put_user_nocheck_2) +EXPORT_SYMBOL(__put_user_nocheck_2) + +SYM_FUNC_START(__put_user_4) + ANNOTATE_NOENDBR + check_range size=4 + ASM_STAC +5: movl %eax,(%_ASM_CX) + xor %ecx,%ecx + ASM_CLAC + RET +SYM_FUNC_END(__put_user_4) +EXPORT_SYMBOL(__put_user_4) + +SYM_FUNC_START(__put_user_nocheck_4) + ANNOTATE_NOENDBR + ASM_STAC +6: movl %eax,(%_ASM_CX) + xor %ecx,%ecx + ASM_CLAC + RET +SYM_FUNC_END(__put_user_nocheck_4) +EXPORT_SYMBOL(__put_user_nocheck_4) + +SYM_FUNC_START(__put_user_8) + ANNOTATE_NOENDBR + check_range size=8 + ASM_STAC +7: mov %_ASM_AX,(%_ASM_CX) +#ifdef CONFIG_X86_32 +8: movl %edx,4(%_ASM_CX) +#endif + xor %ecx,%ecx + ASM_CLAC + RET +SYM_FUNC_END(__put_user_8) +EXPORT_SYMBOL(__put_user_8) + +SYM_FUNC_START(__put_user_nocheck_8) + ANNOTATE_NOENDBR + ASM_STAC +9: mov %_ASM_AX,(%_ASM_CX) +#ifdef CONFIG_X86_32 +10: movl %edx,4(%_ASM_CX) +#endif + xor %ecx,%ecx + ASM_CLAC + RET +SYM_FUNC_END(__put_user_nocheck_8) +EXPORT_SYMBOL(__put_user_nocheck_8) + +SYM_CODE_START_LOCAL(__put_user_handle_exception) + ASM_CLAC +.Lbad_put_user: + movl $-EFAULT,%ecx + RET +SYM_CODE_END(__put_user_handle_exception) + + _ASM_EXTABLE_UA(1b, __put_user_handle_exception) + _ASM_EXTABLE_UA(2b, __put_user_handle_exception) + _ASM_EXTABLE_UA(3b, __put_user_handle_exception) + _ASM_EXTABLE_UA(4b, __put_user_handle_exception) + _ASM_EXTABLE_UA(5b, __put_user_handle_exception) + _ASM_EXTABLE_UA(6b, __put_user_handle_exception) + _ASM_EXTABLE_UA(7b, __put_user_handle_exception) + _ASM_EXTABLE_UA(9b, __put_user_handle_exception) +#ifdef CONFIG_X86_32 + _ASM_EXTABLE_UA(8b, __put_user_handle_exception) + _ASM_EXTABLE_UA(10b, __put_user_handle_exception) +#endif -- cgit v1.3.1