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Thu, 26 Sep 2024 03:41:53 -0700 (PDT) Date: Thu, 26 Sep 2024 12:41:16 +0200 In-Reply-To: <20240926104113.80146-7-ardb+git@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240926104113.80146-7-ardb+git@google.com> X-Developer-Key: i=ardb@kernel.org; a=openpgp; fpr=F43D03328115A198C90016883D200E9CA6329909 X-Developer-Signature: v=1; a=openpgp-sha256; l=738; i=ardb@kernel.org; h=from:subject; bh=duJbwDYusVICSqLA5fZPaN2Y/gts1cbjl01DSFcZijg=; b=owGbwMvMwCFmkMcZplerG8N4Wi2JIe2rle/zunAFTQ8uo0anZz3lB82OHO8LP3L+2lmd1bueh fjq+tl0lLIwiHEwyIopsgjM/vtu5+mJUrXOs2Rh5rAygQxh4OIUgIk8O8XwT5P3of6psH2Nt6wt 14S9Tru+QX3jdqMNE9bvFVnYGfCEdT0jwxaP/S0RDQ9cdv5L82B1q3ql4Zzkajwh8LCzSIzBPTM mXgA= X-Mailer: git-send-email 2.46.0.792.g87dc391469-goog Message-ID: <20240926104113.80146-9-ardb+git@google.com> Subject: [PATCH 2/5] x86/pvh: Use correct size value in GDT descriptor From: Ard Biesheuvel To: linux-kernel@vger.kernel.org Cc: Ard Biesheuvel , Jason Andryuk , Juergen Gross , Boris Ostrovsky , x86@kernel.org, xen-devel@lists.xenproject.org Content-Type: text/plain; charset="UTF-8" From: Ard Biesheuvel The size field in a GDT descriptor is offset by 1, so subtract 1 from the calculated range. Signed-off-by: Ard Biesheuvel --- arch/x86/platform/pvh/head.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/platform/pvh/head.S b/arch/x86/platform/pvh/head.S index 98ddd552885a..f09e0fb832e4 100644 --- a/arch/x86/platform/pvh/head.S +++ b/arch/x86/platform/pvh/head.S @@ -223,7 +223,7 @@ SYM_CODE_END(pvh_start_xen) .section ".init.data","aw" .balign 8 SYM_DATA_START_LOCAL(gdt) - .word gdt_end - gdt_start + .word gdt_end - gdt_start - 1 .long _pa(gdt_start) /* x86-64 will overwrite if relocated. */ .word 0 SYM_DATA_END(gdt) -- 2.46.0.792.g87dc391469-goog