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From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xenproject.org, x86@kernel.org,
	linux-kernel@vger.kernel.org
Cc: Juergen Gross <jgross@suse.com>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>
Subject: [PATCH 4/4] x86/xen: remove 32-bit awareness from startup_xen
Date: Thu, 28 Oct 2021 10:12:21 +0200	[thread overview]
Message-ID: <20211028081221.2475-5-jgross@suse.com> (raw)
In-Reply-To: <20211028081221.2475-1-jgross@suse.com>

startup_xen is still 32-bit aware, even if no longer needed.

Replace the register macros by the 64-bit register names for making
it more readable.

Signed-off-by: Juergen Gross <jgross@suse.com>
---
 arch/x86/xen/xen-head.S | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index cb6538ae2fe0..38b0a3226c95 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -28,13 +28,13 @@ SYM_CODE_START(startup_xen)
 
 	/* Clear .bss */
 	xor %eax,%eax
-	mov $__bss_start, %_ASM_DI
-	mov $__bss_stop, %_ASM_CX
-	sub %_ASM_DI, %_ASM_CX
-	shr $__ASM_SEL(2, 3), %_ASM_CX
-	rep __ASM_SIZE(stos)
+	mov $__bss_start, %rdi
+	mov $__bss_stop, %rcx
+	sub %rdi, %rcx
+	shr $3, %rcx
+	rep stosq
 
-	mov %_ASM_SI, xen_start_info
+	mov %rsi, xen_start_info
 	mov initial_stack(%rip), %rsp
 
 	/* Set up %gs.
-- 
2.26.2


  parent reply	other threads:[~2021-10-28  8:12 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-28  8:12 [PATCH 0/4] xen: do some cleanup Juergen Gross
2021-10-28  8:12 ` Juergen Gross
2021-10-28  8:12 ` [PATCH 1/4] x86/xen: remove 32-bit pv leftovers Juergen Gross
2021-10-28  8:12 ` [PATCH 2/4] xen: allow pv-only hypercalls only with CONFIG_XEN_PV Juergen Gross
2021-10-28  8:12   ` Juergen Gross
2021-10-28  8:12 ` [PATCH 3/4] xen: remove highmem remnants Juergen Gross
2021-10-28  8:12 ` Juergen Gross [this message]
2021-11-01 19:15 ` [PATCH 0/4] xen: do some cleanup Boris Ostrovsky
2021-11-01 19:15   ` Boris Ostrovsky
2021-11-03 14:18   ` Boris Ostrovsky
2021-11-03 14:18     ` Boris Ostrovsky

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