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Shutemov" , Ingo Molnar , Andrew Morton , Dave Hansen , Linus Torvalds , Peter Zijlstra , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Sasha Levin Subject: [PATCH 6.15 089/178] drm/vmwgfx: Fix guests running with TDX/SEV Date: Tue, 8 Jul 2025 18:22:06 +0200 Message-ID: <20250708162238.995085588@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162236.549307806@linuxfoundation.org> References: <20250708162236.549307806@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 50AAD40009 X-Rspamd-Server: rspam09 X-Stat-Signature: yhsakxybjtec67gh3wpi6oojz1mikqde X-HE-Tag: 1751993485-829616 X-HE-Meta: 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 Ij3MNep2 lmM8Bz7z9pFWx5EjSwzEHg35X8sHsfyUqG5+qCYHJnyId74BWo3wIbOjctmdppixy2qXGVLuaytHNlCWzJ8DiiykZIxszctk7KZqHudAmP9m3jrX4HnWG6qab6LROCLI1WxveR45C+Lcug9eihkMSNm8JAeh2Au3mSmBd/EDWi0JzumCrEH0Rp8aMPT7SsUZeFjU20ExCe3SFp6AkWRdsIDPYq9XxFPdgXD2Kb7ao03f3F8vtGyN20TRTOnHSV9LzyqVcGXPWliP9768g2mCdy2qi2di30PEqSmIX/QyMMIowQ7kx7Hs9t63KTLq5oNvQOJ0xTbihjTTgBjob386KdepL6DfaY1ablw7e/oM22WX1bjWOB3IefoxFXhxGSUAxd5wHlCfOs4gY4f9cI+nJGW8WSCWflSK4/wE5yPdC0iO5fIWplwFAob2m5Wvz+b+/dfyuUazgqFp24oSEJDM0F/BG/XPlYX5Q+S8X X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marko Kiiskila [ Upstream commit 7dfede7d7edd18c0c91ca854cde8eaaf4ccf97ea ] Commit 81256a50aa0f ("x86/mm: Make memremap(MEMREMAP_WB) map memory as encrypted by default") changed the default behavior of memremap(MEMREMAP_WB) and started mapping memory as encrypted. The driver requires the fifo memory to be decrypted to communicate with the host but was relaying on the old default behavior of memremap(MEMREMAP_WB) and thus broke. Fix it by explicitly specifying the desired behavior and passing MEMREMAP_DEC to memremap. Fixes: 81256a50aa0f ("x86/mm: Make memremap(MEMREMAP_WB) map memory as encrypted by default") Signed-off-by: Marko Kiiskila Signed-off-by: Zack Rusin Cc: Kirill A. Shutemov Cc: Ingo Molnar Cc: Andrew Morton Cc: Dave Hansen Cc: Linus Torvalds Cc: Peter Zijlstra Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Acked-by: Kirill A. Shutemov Link: https://lore.kernel.org/r/20250618192926.1092450-1-zack.rusin@broadcom.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index 0f32471c85332..55c822a61b9ad 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -769,7 +769,7 @@ static int vmw_setup_pci_resources(struct vmw_private *dev, dev->fifo_mem = devm_memremap(dev->drm.dev, fifo_start, fifo_size, - MEMREMAP_WB); + MEMREMAP_WB | MEMREMAP_DEC); if (IS_ERR(dev->fifo_mem)) { drm_err(&dev->drm, -- 2.39.5