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linux(4): Retire unneeded initialization

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Both uc_flags and uc_link are zeroed above. On amd64 and i386 the
uc_link field is not used at all. The UC_FP_XSTATE bit should be set
in the uc_flags if OS xsave knob is turned on (and xsave is implemented).

MFC after:		2 weeks
This commit is contained in:
Dmitry Chagin 2022-05-15 20:58:47 +03:00
parent 3bae1cd68a
commit 0b5d5dc376
2 changed files with 0 additions and 6 deletions
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3
sys/amd64/linux32/linux32_sysvec.c
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@ -325,9 +325,6 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
/*
* Build the signal context to be used by sigreturn and libgcc unwind.
*/
frame.sf_sc.uc_flags = 0; /* XXX ??? */
frame.sf_sc.uc_link = 0; /* XXX ??? */
frame.sf_sc.uc_stack.ss_sp = PTROUT(td->td_sigstk.ss_sp);
frame.sf_sc.uc_stack.ss_size = td->td_sigstk.ss_size;
frame.sf_sc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK)

3
sys/i386/linux/linux_sysvec.c
View file

@ -431,9 +431,6 @@ linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
siginfo_to_lsiginfo(&ksi->ksi_info, &frame.sf_si, sig);
/* Build the signal context to be used by sigreturn. */
frame.sf_sc.uc_flags = 0; /* XXX ??? */
frame.sf_sc.uc_link = NULL; /* XXX ??? */
frame.sf_sc.uc_stack.ss_sp = PTROUT(td->td_sigstk.ss_sp);
frame.sf_sc.uc_stack.ss_size = td->td_sigstk.ss_size;
frame.sf_sc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK)