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Commit b8aeec34 authored by Hidetoshi Seto's avatar Hidetoshi Seto Committed by Andi Kleen
Browse files

HWPOISON/signalfd: add support for addr_lsb 



Similar change as to signal delivery: copy out the si_addr_lsb field
to user space in signalfd

Signed-off-by: default avatarHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
parent 6b0cd00b

fs/signalfd.c

+10 −0
Original line number Diff line number Diff line
@@ -98,6 +98,16 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, 
		err |= __put_user((long) kinfo->si_addr, &uinfo->ssi_addr);

#ifdef __ARCH_SI_TRAPNO

		err |= __put_user(kinfo->si_trapno, &uinfo->ssi_trapno);

#endif

#ifdef BUS_MCEERR_AO

		/* 

		 * Other callers might not initialize the si_lsb field,

		 * so check explicitly for the right codes here.

		 */

		if (kinfo->si_code == BUS_MCEERR_AR ||

		    kinfo->si_code == BUS_MCEERR_AO)

			err |= __put_user((short) kinfo->si_addr_lsb,

					  &uinfo->ssi_addr_lsb);

#endif

		break;

	case __SI_CHLD:

include/linux/signalfd.h

+2 −1
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ struct signalfd_siginfo { 
	__u64 ssi_utime;

	__u64 ssi_stime;

	__u64 ssi_addr;

	__u16 ssi_addr_lsb;



	/*

	 * Pad strcture to 128 bytes. Remember to update the
@@ -43,7 +44,7 @@ struct signalfd_siginfo { 
	 * comes out of a read(2) and we really don't want to have

	 * a compat on read(2).

	 */

	__u8 __pad[48];

	__u8 __pad[46];

};