lkml.org 
[lkml]   [2021]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[tip: objtool/core] x86/xen: Make hypercall_page noinstr
    The following commit has been merged into the objtool/core branch of tip:

    Commit-ID: 9f38b2a0baf1e5c7a1d1231cd8fe706c6f769a73
    Gitweb: https://git.kernel.org/tip/9f38b2a0baf1e5c7a1d1231cd8fe706c6f769a73
    Author: Peter Zijlstra <peterz@infradead.org>
    AuthorDate: Thu, 24 Jun 2021 11:41:18 +02:00
    Committer: Peter Zijlstra <peterz@infradead.org>
    CommitterDate: Wed, 15 Sep 2021 15:51:50 +02:00

    x86/xen: Make hypercall_page noinstr

    vmlinux.o: warning: objtool: xen_set_debugreg()+0x3: call to hypercall_page() leaves .noinstr.text section
    vmlinux.o: warning: objtool: xen_get_debugreg()+0x3: call to hypercall_page() leaves .noinstr.text section
    vmlinux.o: warning: objtool: xen_irq_enable()+0x24: call to hypercall_page() leaves .noinstr.text section

    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Reviewed-by: Juergen Gross <jgross@suse.com>
    Link: https://lore.kernel.org/r/20210624095148.810950584@infradead.org
    ---
    arch/x86/xen/xen-head.S | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
    index 488944d..9e27b86 100644
    --- a/arch/x86/xen/xen-head.S
    +++ b/arch/x86/xen/xen-head.S
    @@ -20,7 +20,7 @@
    #include <xen/interface/xen-mca.h>
    #include <asm/xen/interface.h>

    -.pushsection .text
    +.pushsection .noinstr.text, "ax"
    .balign PAGE_SIZE
    SYM_CODE_START(hypercall_page)
    .rept (PAGE_SIZE / 32)
    \
     
     \ /
      Last update: 2021-09-15 17:50    [W:2.211 / U:0.276 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site