git: 38dbca724335 - main - Teach vm.pmap.kernel_maps about both XN bits

The branch main has been updated by andrew:

URL: https://cgit.FreeBSD.org/src/commit/?id=38dbca724335fec679e79b72d91a8e36b2624fe1

commit 38dbca724335fec679e79b72d91a8e36b2624fe1
Author:     Andrew Turner <andrew@FreeBSD.org>
AuthorDate: 2021-12-06 13:08:39 +0000
Commit:     Andrew Turner <andrew@FreeBSD.org>
CommitDate: 2021-12-07 15:42:18 +0000

    Teach vm.pmap.kernel_maps about both XN bits
    
    The arm64 vm.pmap.kernel_maps sysctl would only check the kernel XN bit
    when printing the kernel mapping. It can also be useful to check none
    of the mappings allow userspace to execute from a given virtual address.
    To check for this add the user XN bit when getting the kernel maps.
    
    While here fix the ATTR_S1_AP_USER check to use ATTR_S1_AP to shift the
    value to the correct offset.
    
    Reviewed by:    kib (earlier version), markj
    Sponsored by:   The FreeBSD Foundation
    Differential Revision: https://reviews.freebsd.org/D33304
---
 sys/arm64/arm64/pmap.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sys/arm64/arm64/pmap.c b/sys/arm64/arm64/pmap.c
index ef5a42c849dd..a877c0c033f5 100644
--- a/sys/arm64/arm64/pmap.c
+++ b/sys/arm64/arm64/pmap.c
@@ -7000,11 +7000,12 @@ sysctl_kmaps_dump(struct sbuf *sb, struct pmap_kernel_map_range *range,
 		break;
 	}
 
-	sbuf_printf(sb, "0x%016lx-0x%016lx r%c%c%c %3s %d %d %d %d\n",
+	sbuf_printf(sb, "0x%016lx-0x%016lx r%c%c%c%c %3s %d %d %d %d\n",
 	    range->sva, eva,
 	    (range->attrs & ATTR_S1_AP_RW_BIT) == ATTR_S1_AP_RW ? 'w' : '-',
 	    (range->attrs & ATTR_S1_PXN) != 0 ? '-' : 'x',
-	    (range->attrs & ATTR_S1_AP_USER) != 0 ? 'u' : 's',
+	    (range->attrs & ATTR_S1_UXN) != 0 ? '-' : 'X',
+	    (range->attrs & ATTR_S1_AP(ATTR_S1_AP_USER)) != 0 ? 'u' : 's',
 	    mode, range->l1blocks, range->l2blocks, range->l3contig,
 	    range->l3pages);