On 4/6/22 14:33, Varad Gautam wrote:
setup_page_table() ends up filling invalid page table entries
at ptl2 due to improper typecasting. This sometimes leads to
unhandled pagefaults when writing to APIC registers. Fix it.
Fixes: e6f65fa464 ("x86 UEFI: Set up page tables")
Signed-off-by: Varad Gautam <varad.gautam@xxxxxxxx>
---
lib/x86/setup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/x86/setup.c b/lib/x86/setup.c
index bbd3468..7bc7c93 100644
--- a/lib/x86/setup.c
+++ b/lib/x86/setup.c
@@ -258,7 +258,7 @@ static void setup_page_table(void)
curr_pt = (pgd_t *)&ptl2;
flags |= PT_ACCESSED_MASK | PT_DIRTY_MASK | PT_PAGE_SIZE_MASK | PT_GLOBAL_MASK;
for (i = 0; i < 4 * 512; i++) {
- curr_pt[i] = ((phys_addr_t)(i << 21)) | flags;
+ curr_pt[i] = ((phys_addr_t) i << 21) | flags;
}
if (amd_sev_es_enabled()) {
Applied, thanks.
Paolo
