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    Subject[PATCH 19/24] turn priviled operation into a macro in head_64.S
    under paravirt, read cr2 cannot be issued directly anymore.
    So wrap it in a macro, defined to the operation itself in case
    paravirt is off, but to something else if we have paravirt
    in the game

    Signed-off-by: Glauber de Oliveira Costa <>
    Signed-off-by: Steven Rostedt <>
    Acked-by: Jeremy Fitzhardinge <>
    arch/x86/kernel/head_64.S | 9 ++++++++-
    1 files changed, 8 insertions(+), 1 deletions(-)

    diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
    index b6167fe..c31b1c9 100644
    --- a/arch/x86/kernel/head_64.S
    +++ b/arch/x86/kernel/head_64.S
    @@ -19,6 +19,13 @@
    #include <asm/msr.h>
    #include <asm/cache.h>

    +#include <asm/asm-offsets.h>
    +#include <asm/paravirt.h>
    +#define GET_CR2_INTO_RCX movq %cr2, %rcx
    /* we are not able to switch in one step to the final KERNEL ADRESS SPACE
    * because we need identity-mapped pages.
    @@ -267,7 +274,7 @@ ENTRY(early_idt_handler)
    xorl %eax,%eax
    movq 8(%rsp),%rsi # get rip
    movq (%rsp),%rdx
    - movq %cr2,%rcx
    leaq early_idt_msg(%rip),%rdi
    call early_printk
    cmpl $2,early_recursion_flag(%rip)
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      Last update: 2007-11-09 22:37    [W:0.020 / U:0.280 seconds]
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