The following commit has been merged into the x86/urgent branch of tip: Commit-ID: a9f84fb7158fea60cbcadef5c0166fb22b469091 Gitweb: https://git.kernel.org/tip/a9f84fb7158fea60cbcadef5c0166fb22b469091 Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Thu, 24 Mar 2022 14:47:08 +01:00 Committer: Borislav Petkov <bp@xxxxxxx> CommitterDate: Tue, 29 Mar 2022 20:57:18 +02:00 x86/fpu: Remove redundant XCOMP_BV initialization fpu_copy_uabi_to_guest_fpstate() initializes the XCOMP_BV field in the XSAVE header. That's a leftover from the old KVM FPU buffer handling code. Since d69c1382e1b7 ("x86/kvm: Convert FPU handling to a single swap buffer") KVM uses the FPU core allocation code, which initializes the XCOMP_BV field already. Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Link: https://lore.kernel.org/r/20220324134623.408932232@xxxxxxxxxxxxx --- arch/x86/kernel/fpu/core.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 19821f0..c049561 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -415,9 +415,6 @@ int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gfpu, const void *buf, xpkru = get_xsave_addr(&kstate->regs.xsave, XFEATURE_PKRU); *vpkru = xpkru->pkru; } - - /* Ensure that XCOMP_BV is set up for XSAVES */ - xstate_init_xcomp_bv(&kstate->regs.xsave, kstate->xfeatures); return 0; } EXPORT_SYMBOL_GPL(fpu_copy_uabi_to_guest_fpstate);
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