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hv: fix ramdump regression

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this patch change type of global variable for saving registers on execption.

global variable 'crash_ctx' should not be set to static.
crash_ctx is for offline analysis when system crashed, not for runtime usage.
as crash_ctx is only be set without being read, compiler will regard
crash_ctx as an useless variable if it is set to static, and will not
generate code for it.

Tracked-On: #1295
Signed-off-by: zhouji3x <jianfengx.zhou@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
zhouji3x 2018-09-19 11:17:30 +08:00 committed by lijinxia
parent 52ee615428
commit 2908f09f88
1 changed files with 9 additions and 2 deletions
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11
hypervisor/debug/dump.c
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@ -44,8 +44,15 @@ static const char *const excp_names[32] = {
[31] = "Intel Reserved" [31] = "Intel Reserved"
}; };
/* Global variable for save registers on exception */ /*
static struct intr_excp_ctx *crash_ctx; * Global variable for save registers on exception.
* don't change crash_ctx to static.
* crash_ctx is for offline analysis when system crashed, not for runtime usage.
* as crash_ctx is only be set without being read, compiler will regard
* crash_ctx as an useless variable if it is set to static, and will not
* generate code for it.
*/
struct intr_excp_ctx *crash_ctx;
static void dump_guest_reg(struct vcpu *vcpu) static void dump_guest_reg(struct vcpu *vcpu)
{ {