diff options
| author | Dave Airlie <airlied@redhat.com> | 2022-02-28 14:57:14 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2022-02-28 14:57:14 +1000 |
| commit | 6c64ae228f0826859c56711ce133aff037d6205f (patch) | |
| tree | 831f7b3c5a4eb3a5ab932edb6ca27780a316e714 /arch/x86/kernel/fpu/regset.c | |
| parent | 6d09e5cbc9633fa4df88544952614e9137d274af (diff) | |
| parent | 7e57714cd0ad2d5bb90e50b5096a0e671dec1ef3 (diff) | |
| download | linux-6c64ae228f0826859c56711ce133aff037d6205f.tar.bz2 | |
Backmerge tag 'v5.17-rc6' into drm-next
This backmerges v5.17-rc6 so I can merge some amdgpu and some tegra changes on top.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'arch/x86/kernel/fpu/regset.c')
| -rw-r--r-- | arch/x86/kernel/fpu/regset.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/x86/kernel/fpu/regset.c b/arch/x86/kernel/fpu/regset.c index 437d7c930c0b..75ffaef8c299 100644 --- a/arch/x86/kernel/fpu/regset.c +++ b/arch/x86/kernel/fpu/regset.c @@ -91,11 +91,9 @@ int xfpregs_set(struct task_struct *target, const struct user_regset *regset, const void *kbuf, const void __user *ubuf) { struct fpu *fpu = &target->thread.fpu; - struct user32_fxsr_struct newstate; + struct fxregs_state newstate; int ret; - BUILD_BUG_ON(sizeof(newstate) != sizeof(struct fxregs_state)); - if (!cpu_feature_enabled(X86_FEATURE_FXSR)) return -ENODEV; @@ -116,9 +114,10 @@ int xfpregs_set(struct task_struct *target, const struct user_regset *regset, /* Copy the state */ memcpy(&fpu->fpstate->regs.fxsave, &newstate, sizeof(newstate)); - /* Clear xmm8..15 */ + /* Clear xmm8..15 for 32-bit callers */ BUILD_BUG_ON(sizeof(fpu->__fpstate.regs.fxsave.xmm_space) != 16 * 16); - memset(&fpu->fpstate->regs.fxsave.xmm_space[8], 0, 8 * 16); + if (in_ia32_syscall()) + memset(&fpu->fpstate->regs.fxsave.xmm_space[8*4], 0, 8 * 16); /* Mark FP and SSE as in use when XSAVE is enabled */ if (use_xsave()) |