Add snphost CI PR test

.github/workflows/snp_function_declarations.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+verify_snp_host() {
+local AMDSEV_URL="https://github.com/LakshmiSaiHarika/AMDSEV.git"
+local AMDSEV_DEFAULT_BRANCH="fedora-build-install-upstream-kernel"
+
+if ! sudo dmesg | grep -i "SEV-SNP enabled" 2>&1 >/dev/null; then
+  echo -e "SEV-SNP not enabled on the host. Please follow these steps to enable:\n\
+  $(echo "${AMDSEV_URL}" | sed 's|\.git$||g')/tree/${AMDSEV_DEFAULT_BRANCH}#prepare-host"
+  return 1
+fi
+}
+
+check_rust_on_host() {
+  # Install Rust on the host
+  source "${HOME}/.cargo/env" 2>/dev/null || true
+  if ! command -v rustc &> /dev/null; then
+    echo "Installing Rust..."
+    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs -sSf | sh -s -- -y
+    source "${HOME}/.cargo/env" 2>/dev/null
+  fi
+}
+

.github/workflows/snphost_ci_test.yaml

@@ -0,0 +1,83 @@
+name: snphost CI PR test
+
+on:
+  pull_request_target:
+    types:
+      - reopened
+      - opened
+      - edited
+      - synchronize
+  workflow_dispatch:
+    inputs:
+      pull_request_number:
+        description: 'Specify the pull request number'
+      pull_request_branch:
+        description: 'Specify pull request source branch'
+
+jobs:
+  host_firmware_tests:
+    runs-on: self-hosted
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v3
+
+      - name: Show the active SNP host kernel version on the host
+        run: uname -r
+
+      - name: Check if SNP is enabled on the host
+        run: |
+              set -e
+              source ./.github/workflows/snp_function_declarations.sh
+              verify_snp_host
+
+      - name: Set the PR number and PR branch environment based on GH Action event type
+        run: |
+            event_pr_number=''
+            event_pr_branch=''
+
+            if [ ${{ github.event_name }} == "pull_request_target" ]; then
+              event_pr_number=${{ github.event.pull_request.number }}
+              event_pr_branch=${{ github.event.pull_request.head.ref }}
+            elif [ ${{ github.event_name }} == "workflow_dispatch" ]; then
+              event_pr_number=${{ github.event.inputs.pull_request_number }}
+              event_pr_branch=${{ github.event.inputs.pull_request_branch }}
+            fi
+
+            echo "pr_number=${event_pr_number}" >> $GITHUB_ENV
+            echo "pr_branch=${event_pr_branch}" >> $GITHUB_ENV
+
+      - name: Show the GH environment variable current values
+        run: |
+            echo "GH Action PR number = ${{ env.pr_number }}"
+            echo "GH Action PR branch = ${{ env.pr_branch }}"
+
+      - name: Run snphost cargo test on the host
+        run: |
+              set -e
+
+              # Check and install dependencies on the host
+              source ./.github/workflows/snp_function_declarations.sh
+              check_rust_on_host
+
+              cd ${HOME}/
+              git clone https://github.com/LakshmiSaiHarika/snphost.git
+              cd ./snphost
+
+              # Checkout the PR branch
+              if [[ ${{ github.event_name }} == "pull_request_target" || ${{ github.event_name }} == "workflow_dispatch" ]]; then
+                git fetch origin pull/${{ env.pr_number }}/head:${{ env.pr_branch }}
+                git switch ${{ env.pr_branch }}
+              fi
+
+              # Perform cargo test on the host
+              cargo test
+
+      - name: snphost post cleanup tasks
+        if: always()
+        run: rm -rf ${HOME}/snphost
+
+# Update this workflow title dynamically with PR details
+run-name: |
+  ${{ (startsWith(github.event_name, 'workflow_dispatch') && format('snphost PR CI test for PR #{0}/PR source branch({1})', github.event.inputs.pull_request_number, github.event.inputs.pull_request_branch)) ||
+         (startsWith(github.event_name, 'pull_request') && format('{0}', github.event.pull_request.title )) }}
+