From 1fcd46b927c07caa1df1b82cd3bca2c547c06f01 Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Fri, 7 Dec 2007 17:05:15 +0000 Subject: [PATCH] x86: Change proliant io emulation stub to use pushf/popf instead of pushfw/popfw. Signed-off-by: Keir Fraser --- xen/arch/x86/ioport_emulate.c | 26 ++++++++++++-------------- 1 file changed, 12 insertions(+), 14 deletions(-) diff --git a/xen/arch/x86/ioport_emulate.c b/xen/arch/x86/ioport_emulate.c index 2180b6027b..b6df736672 100644 --- a/xen/arch/x86/ioport_emulate.c +++ b/xen/arch/x86/ioport_emulate.c @@ -22,26 +22,24 @@ static void ioemul_handle_proliant_quirk( if ( (opcode != 0xee) || (port != 0xcd4) || !(value & 0x80) ) return; - /* pushfw */ - io_emul_stub[ 0] = 0x66; - io_emul_stub[ 1] = 0x9c; + /* pushf */ + io_emul_stub[0] = 0x9c; /* cli */ - io_emul_stub[ 2] = 0xfa; + io_emul_stub[1] = 0xfa; /* out %al,%dx */ - io_emul_stub[ 3] = 0xee; + io_emul_stub[2] = 0xee; /* 1: in %dx,%al */ - io_emul_stub[ 4] = 0xec; + io_emul_stub[3] = 0xec; /* test $0x80,%al */ - io_emul_stub[ 5] = 0xa8; - io_emul_stub[ 6] = 0x80; + io_emul_stub[4] = 0xa8; + io_emul_stub[5] = 0x80; /* jnz 1b */ - io_emul_stub[ 7] = 0x75; - io_emul_stub[ 8] = 0xfb; - /* popfw */ - io_emul_stub[ 9] = 0x66; - io_emul_stub[10] = 0x9d; + io_emul_stub[6] = 0x75; + io_emul_stub[7] = 0xfb; + /* popf */ + io_emul_stub[8] = 0x9d; /* ret */ - io_emul_stub[11] = 0xc3; + io_emul_stub[9] = 0xc3; } int __init proliant_quirk(struct dmi_system_id *d) -- 2.30.2