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authorLinus Torvalds <torvalds@linux-foundation.org>2016-03-22 20:55:17 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-22 20:55:17 +0100
commit55fc733c7e1de05a03237d857f4fe6dcec52d8d9 (patch)
treea3f5d48c02fc9d0cf569519e645709cac9bf8d1c /arch/x86/xen
parentMerge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff)
parentdrivers/xen: make platform-pci.c explicitly non-modular (diff)
downloadlinux-55fc733c7e1de05a03237d857f4fe6dcec52d8d9.tar.xz
linux-55fc733c7e1de05a03237d857f4fe6dcec52d8d9.zip
Merge tag 'for-linus-4.6-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from David Vrabel: "Features and fixes for 4.6: - Make earlyprintk=xen work for HVM guests - Remove module support for things never built as modules" * tag 'for-linus-4.6-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: drivers/xen: make platform-pci.c explicitly non-modular drivers/xen: make sys-hypervisor.c explicitly non-modular drivers/xen: make xenbus_dev_[front/back]end explicitly non-modular drivers/xen: make [xen-]ballon explicitly non-modular xen: audit usages of module.h ; remove unnecessary instances xen/x86: Drop mode-selecting ifdefs in startup_xen() xen/x86: Zero out .bss for PV guests hvc_xen: make early_printk work with HVM guests hvc_xen: fix xenboot for DomUs hvc_xen: add earlycon support
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/xen-head.S19
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index b65f59a358a2..de93b20fa0d2 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -38,13 +38,18 @@
__INIT
ENTRY(startup_xen)
cld
-#ifdef CONFIG_X86_32
- mov %esi,xen_start_info
- mov $init_thread_union+THREAD_SIZE,%esp
-#else
- mov %rsi,xen_start_info
- mov $init_thread_union+THREAD_SIZE,%rsp
-#endif
+
+ /* 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 %_ASM_SI, xen_start_info
+ mov $init_thread_union+THREAD_SIZE, %_ASM_SP
+
jmp xen_start_kernel
__FINIT