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hv: Add host CR2 to exception dump

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ACRN dumps host registers in case of an exception in root mode operation.
This patch adds CR2 register to the dump. It is useful for
page-fault debug in HV to know the offending address.

Tracked-On: #2969
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Sainath Grandhi 2019-04-17 01:01:06 -07:00 committed by wenlingz
parent b1e68453bd
commit 5a51d0bfb5
1 changed files with 3 additions and 0 deletions
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3
hypervisor/debug/dump.c
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@ -252,6 +252,7 @@ void asm_assert(int32_t line, const char *file, const char *txt)
void dump_intr_excp_frame(const struct intr_excp_ctx *ctx)
{
const char *name = "Not defined";
uint64_t cr2_val;
pr_acrnlog("\n\n================================================");
pr_acrnlog("================================\n=\n");
@ -278,6 +279,8 @@ void dump_intr_excp_frame(const struct intr_excp_ctx *ctx)
ctx->rflags, ctx->gp_regs.r14, ctx->gp_regs.r15);
pr_acrnlog("= ERRCODE=0x%016llX CS=0x%016llX SS=0x%016llX\n",
ctx->error_code, ctx->cs, ctx->ss);
asm volatile ("movq %%cr2, %0" : "=r" (cr2_val));
pr_acrnlog("= CR2=0x%016llX", cr2_val);
pr_acrnlog("\r\n");
pr_acrnlog("=====================================================");