[xen stable-4.13] SUPPORT.md: Un-shimmed 32-bit PV guests are no longer supported

[patchbot@xxxxxxx]

commit 64752a9bda8dc80a02456405607aba2d085dd3f2
Author:     George Dunlap <george.dunlap@xxxxxxxxxx>
AuthorDate: Thu Jul 15 09:37:34 2021 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Jul 15 09:37:34 2021 +0200

    SUPPORT.md: Un-shimmed 32-bit PV guests are no longer supported
    
    The support status of 32-bit guests doesn't seem particularly useful.
    
    Reported-by: Jann Horn <jannh@xxxxxxxxxx>
    Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    master commit: 1a0f2fe2297d122a08fee2b26de5de995fdeca13
    master date: 2021-06-04 17:24:05 +0100
---
 SUPPORT.md | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/SUPPORT.md b/SUPPORT.md
index b8fc04e934..3f4a01101e 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -82,14 +82,7 @@ No hardware requirements
 
     Status, x86_64: Supported
     Status, x86_32, shim: Supported
-    Status, x86_32, without shim: Supported, with caveats
-
-Due to architectural limitations,
-32-bit PV guests must be assumed to be able to read arbitrary host memory
-using speculative execution attacks.
-Advisories will continue to be issued
-for new vulnerabilities related to un-shimmed 32-bit PV guests
-enabling denial-of-service attacks or privilege escalation attacks.
+    Status, x86_32, without shim: Supported, not security supported
 
 ### x86/HVM
 
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generated by git-patchbot for /home/xen/git/xen.git#stable-4.13