Hi Stefano,
On 05/07/16 18:13, Stefano Stabellini wrote:
On Thu, 23 Jun 2016, Julien Grall wrote:
On 23/06/2016 04:17, Shannon Zhao wrote:
From: Shannon Zhao <shannon.z...@linaro.org>
Copy all the ACPI tables to guest space so that UEFI or guest could
access them.
Signed-off-by: Shannon Zhao <shannon.z...@linaro.org>
---
tools/libxc/xc_dom_arm.c | 51
++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/tools/libxc/xc_dom_arm.c b/tools/libxc/xc_dom_arm.c
index 64a8b67..6a0a5b7 100644
--- a/tools/libxc/xc_dom_arm.c
+++ b/tools/libxc/xc_dom_arm.c
@@ -63,6 +63,47 @@ static int setup_pgtables_arm(struct xc_dom_image *dom)
/* ------------------------------------------------------------------------
*/
+static int xc_dom_copy_acpi(struct xc_dom_image *dom)
+{
+ int rc, i;
+ uint32_t pages_num = ROUNDUP(dom->acpitable_size, XC_PAGE_SHIFT) >>
+ XC_PAGE_SHIFT;
+ const xen_pfn_t base = GUEST_ACPI_BASE >> XC_PAGE_SHIFT;
+ xen_pfn_t *p2m;
+ void *acpi_pages;
+
+ p2m = malloc(pages_num * sizeof(*p2m));
+ for (i = 0; i < pages_num; i++)
+ p2m[i] = base + i;
+
+ rc = xc_domain_populate_physmap_exact(dom->xch, dom->guest_domid,
+ pages_num, 0, 0, p2m);
Hmmmm... it looks like this is working because libxl is setting the maximum
size of the domain with some slack (1MB). However, I guess the slack was for
something else. Wei, Stefano, Ian, can you confirm?
If I recall correctly, the slack is a magic value coming from the
ancient history of toolstacks.
Does it mean we would need to update the slack to take into account the
ACPI blob?
Cheers,
--
Julien Grall
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